diff --git a/config/ml/phase_e_fill_coeffs.json b/config/ml/phase_e_fill_coeffs.json
new file mode 100644
index 000000000..aea5fdf63
--- /dev/null
+++ b/config/ml/phase_e_fill_coeffs.json
@@ -0,0 +1,60 @@
+{
+  "ask_coeffs": [
+    [
+      0.015584787353873253,
+      -40.335906982421875,
+      0.041306495666503906,
+      0.6524077653884888,
+      -0.055438391864299774
+    ],
+    [
+      -0.677562415599823,
+      -40.335906982421875,
+      0.041306495666503906,
+      0.6524077653884888,
+      -0.055438391864299774
+    ],
+    [
+      -1.0830274820327759,
+      -40.335906982421875,
+      0.041306495666503906,
+      0.6524077653884888,
+      -0.055438391864299774
+    ]
+  ],
+  "bid_coeffs": [
+    [
+      -0.21279112994670868,
+      -2.063631057739258,
+      -0.09875621646642685,
+      -0.006330371834337711,
+      -0.28642183542251587
+    ],
+    [
+      -0.9059383273124695,
+      -2.063631057739258,
+      -0.09875621646642685,
+      -0.006330371834337711,
+      -0.28642183542251587
+    ],
+    [
+      -1.3114033937454224,
+      -2.063631057739258,
+      -0.09875621646642685,
+      -0.006330371834337711,
+      -0.28642183542251587
+    ]
+  ],
+  "empirical_ask_l1_rate": 0.713424,
+  "empirical_bid_l1_rate": 0.049668,
+  "fit_iters": 1000,
+  "fit_lr": 0.009999999776482582,
+  "l1_only_limitation": true,
+  "l1_only_limitation_reason": "parse_mbp10_streaming ignores Mbp10Msg.levels[1..10]; L2/L3 coefficients are L1 with attenuated β_0 (-ln(L+1))",
+  "n_degenerate_skipped": 138941,
+  "n_snapshots": 500000,
+  "n_trades": 5198778,
+  "phase": "E.0 Task 5",
+  "snapshot_interval": 50,
+  "window_seconds": 60.0
+}
\ No newline at end of file
diff --git a/crates/ml/examples/phase_e_fit_fill_model.rs b/crates/ml/examples/phase_e_fit_fill_model.rs
index 063028729..96f492d2d 100644
--- a/crates/ml/examples/phase_e_fit_fill_model.rs
+++ b/crates/ml/examples/phase_e_fit_fill_model.rs
@@ -74,7 +74,7 @@ struct Cli {
     #[arg(long, default_value_t = 60.0)]
     window_seconds: f32,
     /// Output JSON path.
-    #[arg(long, default_value = "phase_e_fill_coeffs.json")]
+    #[arg(long, default_value = "config/ml/phase_e_fill_coeffs.json")]
     out_path: PathBuf,
     /// MBP-10 events between snapshot emissions (denser = larger sample).
     #[arg(long, default_value_t = 10)]