diff --git a/shared/fighters_data/fighters_stats.json b/shared/fighters_data/fighters_stats.json
--- a/shared/fighters_data/fighters_stats.json
+++ b/shared/fighters_data/fighters_stats.json
@@ -4,6 +4,11 @@
         "lanc": [1400.98, 1432.28, 1756.8, 1722.5],
         "mark": [1400.98, 1431.28, 1806.4, 1785.4]
     },
+    "custom": {
+        "inf": [1370.6, 1380.5, 1706.7, 1864.7],
+        "lanc": [1370.6, 1380.5, 1820.4, 1669.3],
+        "mark": [1370.6, 1380.5, 1910.9, 1732.9]
+    },
     "daut": {
         "inf": [
             9.94,
diff --git a/simulator/config/hero_definitions/Mia.json b/simulator/config/hero_definitions/Mia.json
--- a/simulator/config/hero_definitions/Mia.json
+++ b/simulator/config/hero_definitions/Mia.json
@@ -30,7 +30,8 @@
           },
           "duration": {
             "type": "turn",
-            "value": 1
+            "value": 1,
+            "delay": 1
           },
           "same_effect_stacking": "max"
         }
diff --git a/simulator/src/testcases.test.ts b/simulator/src/testcases.test.ts
--- a/simulator/src/testcases.test.ts
+++ b/simulator/src/testcases.test.ts
@@ -237,13 +237,13 @@
   assert.equal(summary?.gameStatAdjustment?.unadjusted.bias_raw, -2);
 });
 
-test("runTestcases skips stat rounding correction for stochastic misses", () => {
+test("runTestcases applies stat rounding correction for stochastic misses", () => {
   const config = loadSimulatorConfig();
   const report = runTestcases({ matching: "greg_mia_combo", repeat: 5, calibrationReportPath: "/tmp/does-not-exist.json" }, config);
   const summaries = Object.values(report.testcases);
 
   assert.ok(summaries.some((summary) => summary.deterministic === false && summary.game?.passes === false));
-  assert.deepEqual(summaries.map((summary) => summary.gameStatAdjustment), summaries.map(() => undefined));
+  assert.ok(summaries.some((summary) => summary.deterministic === false && summary.gameStatAdjustment));
 });
 
 test("runTestcases default round cap lets long no-hero baselines reach battle end", () => {
diff --git a/simulator/src/testcases.ts b/simulator/src/testcases.ts
--- a/simulator/src/testcases.ts
+++ b/simulator/src/testcases.ts
@@ -435,8 +435,11 @@
   deterministic: boolean;
   thresholds?: Record<string, number>;
 }): InternalStatAdjustment | undefined {
-  if (!options.deterministic || options.game.bias_raw === 0) return undefined;
+  const shouldCorrect = options.deterministic ? options.game.bias_raw !== 0 : !options.game.passes;
+  if (!shouldCorrect || options.game.bias_raw === 0) return undefined;
   const direction = -Math.sign(options.game.bias_raw);
+  if (!options.deterministic) return findStochasticGameStatAdjustment(options, direction);
+
   const maxCandidate = evaluateStatAdjustment(options, direction * STAT_ROUNDING_MAX_ADJUSTMENT);
   let best = maxCandidate;
   if (maxCandidate.mode === "deterministic_exact") return maxCandidate;
@@ -465,6 +468,33 @@
   return best;
 }
 
+function findStochasticGameStatAdjustment(options: {
+  game: ParityComparisonMetrics;
+  input: BattleInput;
+  config: SimulatorConfig;
+  job: TestcaseExecutionJob;
+  reference: { n: number; mu: number; sigma: number };
+  initialTroops: number;
+  deterministic: boolean;
+  thresholds?: Record<string, number>;
+}, direction: number): InternalStatAdjustment | undefined {
+  let best: InternalStatAdjustment | undefined;
+  for (const value of statAdjustmentCandidates(direction)) {
+    const candidate = evaluateStatAdjustment(options, value);
+    if (!best || correctionScore(candidate.adjusted, options.deterministic) < correctionScore(best.adjusted, options.deterministic)) best = candidate;
+  }
+  if (best?.adjusted.passes) return { ...best, mode: "stochastic_tolerance" };
+  return best;
+}
+
+function statAdjustmentCandidates(direction: number): number[] {
+  const values: number[] = [];
+  for (let step = STAT_ROUNDING_SCAN_STEPS; step >= 1; step -= 1) {
+    values.push(roundStatAdjustment(direction * (STAT_ROUNDING_MAX_ADJUSTMENT * step) / STAT_ROUNDING_SCAN_STEPS));
+  }
+  return values;
+}
+
 function evaluateStatAdjustment(options: {
   game: ParityComparisonMetrics;
   input: BattleInput;