diff --git a/docs/RESULTS.md b/docs/RESULTS.md
index 4bd869f..a648aea 100644
--- a/docs/RESULTS.md
+++ b/docs/RESULTS.md
@@ -582,3 +582,23 @@ Consequences, stated plainly:
 Predictions for all five frontier runs publish alongside this entry
 (release frontier-predictions-v1) so the numbers above are re-derivable
 by anyone.
+
+## ara-diac-small-2-gkd — on-policy distillation NEGATIVE: 6.0036 (2026-09-06)
+
+The on-policy rung (GKD: student-generated mistakes scored by the
+teacher, 10,995 steps, labels sha e70ce991): teacher reproduces 2.289,
+student **6.0036** full-set, paired bootstrap delta 3.4083 [3.109,
+3.743], p=0 — gate FAILED, and 1.43pp WORSE than the off-policy
+sequence-KD rung it was meant to improve (G2a 4.5701).
+
+This completes the residual-attribution program with a clean pattern:
+every lever tested fails to close the teacher-student gap —
+* classical corpus add (G2b): flat-negative
+* register swap (E6): negative
+* on-policy distillation (GKD): negative, worse than off-policy
+* memory layers (PKM): real but small (0.70pp), below bar
+* epochs: small (0.25pp)
+The residual is not data, not domain coverage, not an off/on-policy
+deficit. It is a property of the compression itself at this rung —
+the honest open question for the paper. On-policy stays listed in
+Paper B's future work with its measured negative attached.