diff --git a/zenno/src/routes/mspeed/+page.svelte b/zenno/src/routes/mspeed/+page.svelte
index 20c156e..23ac327 100644
--- a/zenno/src/routes/mspeed/+page.svelte
+++ b/zenno/src/routes/mspeed/+page.svelte
@@ -70,9 +70,15 @@
 	const lcY: Array<ComputedSeries | null> = $derived([
 		{ label: 'Ideal Lane Combo', y: (x) => speedGain(moveLaneModifier(x), lcDur, accel[0], decel[0]) / HORSE_LENGTH },
 	]);
-	const yRule: HorizontalRule[] = $derived([
-		{ y: speedGain(0.35, skillDuration(2.4, raceLen), accel[1], decel[1]) / HORSE_LENGTH, label: 'Professor of Curvature' },
-	]);
+	const pcRuler = $derived({ y: speedGain(0.35, skillDuration(2.4, raceLen), accel[1], decel[1]) / HORSE_LENGTH, label: 'Professor of Curvature' });
+    const ssYRule = $derived([
+        pcRuler,
+        { y: speedGain(lcBoost, lcDur, accel[0], decel[0]) / HORSE_LENGTH, label: 'Lane Combo' },
+    ]);
+    const lcYRule = $derived([
+        pcRuler,
+        { y: speedGain(ssBoost, ssDur, accel[0], decel[1]) / HORSE_LENGTH, label: 'Spot Struggle' },
+    ]);
 </script>
 
 <h1 class="text-4xl">Front Runner Mechanical Speed Comparator</h1>
@@ -132,10 +138,10 @@
 	{/each}
 </div>
 <div class="mx-auto h-60 py-4 md:h-96 md:w-3xl">
-	<StatChart class="flex-1" stat={Stat.Guts} y={ssY} yLabel="Lengths Gained" range={[0, 1.5, 2.5]} xRule={gutsStat} {yRule} />
+	<StatChart class="flex-1" stat={Stat.Guts} y={ssY} yLabel="Lengths Gained" range={[0, 1.5, 2.5]} xRule={gutsStat} yRule={ssYRule} />
 </div>
 <div class="mx-auto mt-4 h-60 py-4 md:mt-0 md:h-96 md:w-3xl">
-	<StatChart class="flex-1" stat={Stat.Power} y={lcY} yLabel="Lengths Gained" range={[0, 1.5, 2.5]} xRule={powerStat} {yRule} />
+	<StatChart class="flex-1" stat={Stat.Power} y={lcY} yLabel="Lengths Gained" range={[0, 1.5, 2.5]} xRule={powerStat} yRule={lcYRule} />
 </div>
 <div class="mx-auto mt-12 w-full max-w-4xl border-t md:mt-8">
 	<ul class="ml-4 list-disc">