diff --git a/FABRIC-3.md b/FABRIC-3.md
index de7af37a..70b392ac 100644
--- a/FABRIC-3.md
+++ b/FABRIC-3.md
@@ -5855,3 +5855,17 @@ That is the natural mechanism a real fix would hook, not something to build from
 with the workflow") -- find and log these live, keep the campaign running, don't stop to fix
 each one as found. Real feature, real gap, deliberately deferred.
 
+### XXXV.15 -- Extractor bug: SLOT_FMT never updated after §XXXV.12's alignment fix
+
+Found checking the real, live campaign's first two trials against the console log. Both slots
+read back as "CRC mismatch" in `extract_doe_region.py` even though the kernel-side write path
+was correct and the console log showed clean trials. Root cause: §XXXV.12's struct-alignment fix
+added an explicit `_align_pad` `uint32_t` field to `doe_trial_slot_t` (`doe_region.h`), but
+`extract_doe_region.py`'s `SLOT_FMT`/`SLOT_CRC_SPAN` were never updated to match -- every field
+after `isa` was being read from the wrong byte offset, so `slot_crc` itself was read from the
+wrong bytes entirely. Fixed (`SLOT_FMT = "<QQIIIIIII8sIQ"`, `assert SLOT_SIZE == DOE_SLOT_SIZE`
+tightened from `<=` to catch exactly this kind of drift next time). Re-extracted the real
+campaign's first two trials correctly: `run=0 cfg=0 rep=14 nw=2 mode=uniform fail=0`,
+`run=1 cfg=5 rep=8 nw=8 mode=heterogeneous fail=0`, both `fleet_conserved=1`,
+`fleet_k_q48=65536` (exactly Q48.16 1.0) -- clean so far.
+
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new file mode 100644
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diff --git a/experiments/bare_metal/analysis/charts/multiuser_fleet_k_sequence.svg b/experiments/bare_metal/analysis/charts/multiuser_fleet_k_sequence.svg
new file mode 100644
index 00000000..bf648109
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diff --git a/experiments/bare_metal/analysis/charts/multiuser_placeholder.svg b/experiments/bare_metal/analysis/charts/multiuser_placeholder.svg
deleted file mode 100644
index 00d60a29..00000000
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new file mode 100644
index 00000000..74418ff3
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diff --git a/experiments/bare_metal/analysis/report/figures/multiuser_fail_rate.pdf b/experiments/bare_metal/analysis/report/figures/multiuser_fail_rate.pdf
new file mode 100644
index 00000000..fb050ed3
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diff --git a/experiments/bare_metal/analysis/report/figures/multiuser_fleet_k_sequence.pdf b/experiments/bare_metal/analysis/report/figures/multiuser_fleet_k_sequence.pdf
new file mode 100644
index 00000000..9eb7b1da
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diff --git a/experiments/bare_metal/analysis/report/figures/multiuser_placeholder.pdf b/experiments/bare_metal/analysis/report/figures/multiuser_placeholder.pdf
deleted file mode 100644
index 496f4a3f..00000000
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diff --git a/experiments/bare_metal/analysis/report/figures/multiuser_switch_count.pdf b/experiments/bare_metal/analysis/report/figures/multiuser_switch_count.pdf
new file mode 100644
index 00000000..c55a242c
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diff --git a/experiments/bare_metal/analysis/report/multiuser_doe_report.pdf b/experiments/bare_metal/analysis/report/multiuser_doe_report.pdf
index e8ef5471..5a6c7741 100644
Binary files a/experiments/bare_metal/analysis/report/multiuser_doe_report.pdf and b/experiments/bare_metal/analysis/report/multiuser_doe_report.pdf differ
diff --git a/experiments/bare_metal/analysis/report/sections/multiuser_summary_autogen.tex b/experiments/bare_metal/analysis/report/sections/multiuser_summary_autogen.tex
index 9ddcb6ff..9065e06c 100644
--- a/experiments/bare_metal/analysis/report/sections/multiuser_summary_autogen.tex
+++ b/experiments/bare_metal/analysis/report/sections/multiuser_summary_autogen.tex
@@ -1,4 +1,11 @@
 % Auto-generated by analyse_multiuser_doe.R -- do not edit by hand.
-No trial data has been persisted to the DoE region yet. This section
-will populate automatically the next time this report is built after
-the campaign has produced at least one completed trial.
+This report reflects \textbf{2} completed trial(s) persisted via
+\texttt{DOE-PERSIST-TRIAL} as of the last extraction, spanning ISA(s)
+\texttt{amd64}. Overall fail rate across all trials so far is
+\textbf{0.0\%}; \textbf{100.0\%} of trials read
+\texttt{fleet\_conserved==1} at trial end.
+
+\begin{itemize}
+  \item 2 workers, uniform: 1 trials, fail rate 0.0\%, mean fleet K = 1.0000
+  \item 8 workers, heterogeneous: 1 trials, fail rate 0.0\%, mean fleet K = 1.0000
+\end{itemize}
diff --git a/experiments/bare_metal/analysis/tables/multiuser_cell_summary.csv b/experiments/bare_metal/analysis/tables/multiuser_cell_summary.csv
new file mode 100644
index 00000000..eb11382f
--- /dev/null
+++ b/experiments/bare_metal/analysis/tables/multiuser_cell_summary.csv
@@ -0,0 +1,3 @@
+"nw","mode","n_trials","n_fail","fail_rate","mean_fail_count","mean_fleet_k","pct_conserved","mean_switch_cnt"
+"2","uniform",1,0,0,0,1,1,0
+"8","heterogeneous",1,0,0,0,1,1,0
diff --git a/experiments/bare_metal/analysis/tables/multiuser_status.csv b/experiments/bare_metal/analysis/tables/multiuser_status.csv
deleted file mode 100644
index 57e00894..00000000
--- a/experiments/bare_metal/analysis/tables/multiuser_status.csv
+++ /dev/null
@@ -1,2 +0,0 @@
-"status","trials_so_far"
-"No trials persisted yet",0
diff --git a/experiments/bare_metal/runs/multiuser-doe-trials.csv b/experiments/bare_metal/runs/multiuser-doe-trials.csv
index 7e670c9a..b2133d34 100644
--- a/experiments/bare_metal/runs/multiuser-doe-trials.csv
+++ b/experiments/bare_metal/runs/multiuser-doe-trials.csv
@@ -1 +1,3 @@
 isa,run_id,cfg,rep,nw,mode,fail_count,fleet_k_q48,fleet_conserved,switch_count_cumulative
+amd64,0,0,14,2,0,0,65536,1,0
+amd64,1,5,8,8,1,0,65536,1,0
diff --git a/scripts/extract_doe_region.py b/scripts/extract_doe_region.py
index 58a1a7e2..a415f7a9 100755
--- a/scripts/extract_doe_region.py
+++ b/scripts/extract_doe_region.py
@@ -73,11 +73,13 @@ CTRL_CRC_SPAN = struct.calcsize("<QIIII")  # everything before hdr_crc
 
 # doe_trial_slot_t: fleet_k_q48(u64) switch_count_cumulative(u64)
 # run_id(u32) cfg(u32) rep(u32) nw(u32) mode(u32) fail_count(u32)
-# fleet_conserved(u32) isa(8s) slot_crc(u64), rest is padding to 64.
-SLOT_FMT = "<QQIIIIIII8sQ"
+# fleet_conserved(u32) isa(8s) _align_pad(u32, explicit -- see
+# doe_region.h's own comment on why: brings slot_crc to an 8-aligned
+# offset without relying on implicit compiler padding) slot_crc(u64).
+SLOT_FMT = "<QQIIIIIII8sIQ"
 SLOT_SIZE = struct.calcsize(SLOT_FMT)
-SLOT_CRC_SPAN = struct.calcsize("<QQIIIIIII8s")  # everything before slot_crc
-assert SLOT_SIZE <= DOE_SLOT_SIZE
+SLOT_CRC_SPAN = struct.calcsize("<QQIIIIIII8sI")  # everything before slot_crc
+assert SLOT_SIZE == DOE_SLOT_SIZE
 
 
 # CRC-64/XZ, same polynomial/algorithm as compute_crc64() in
@@ -186,7 +188,7 @@ def read_ring(dev_path: str):
             f.seek(blk_off + slot_off_in_devblock)
             raw = f.read(SLOT_SIZE)
             (fleet_k_q48, switch_count, run_id, cfg, rep, nw, mode,
-             fail_count, fleet_conserved, isa_raw, slot_crc) = struct.unpack(SLOT_FMT, raw)
+             fail_count, fleet_conserved, isa_raw, _align_pad, slot_crc) = struct.unpack(SLOT_FMT, raw)
 
             want_slot_crc = compute_crc64(raw[:SLOT_CRC_SPAN])
             if want_slot_crc != slot_crc: