diff --git a/dashboards/forza_composite/index.html b/dashboards/forza_composite/index.html
index f58b9e4..3bd8aa5 100644
--- a/dashboards/forza_composite/index.html
+++ b/dashboards/forza_composite/index.html
@@ -133,15 +133,15 @@ function draw(cur,max){
  // scale marks along TOTAL path (arc + line)
  const mr=sr-gw/2-6,pr=sr+gw/2+6;
  for(let r=0;r<=max;r+=2000){
-  const t=r/max,p=pathPt(t);
-  if(r*totalLen/max<=arcLen){
-   const a=d2r(As+(Ae-As)*t);
+  const t=r/max,ad=t*totalLen;
+  if(ad<=arcLen){
+   const a=d2r(As+(Ae-As)*(ad/arcLen));
    ctx.beginPath();ctx.moveTo(sx+mr*Math.cos(a),sy+mr*Math.sin(a));ctx.lineTo(sx+pr*Math.cos(a),sy+pr*Math.sin(a));
    ctx.strokeStyle=r>=rl?'rgba(255,255,255,.15)':'rgba(255,255,255,.08)';
    ctx.lineWidth=r%4000===0?2.5:1;ctx.stroke();
    if(r%4000===0){ctx.fillStyle='rgba(255,255,255,.22)';ctx.font=`${Math.max(13,W/38)|0}px 'NEXT ART',sans-serif`;ctx.textAlign='center';ctx.fillText(Math.round(r/1000),sx+(pr+22)*Math.cos(a),sy+(pr+22)*Math.sin(a)+5)}
   }else{
-   // on line portion: vertical marks
+   const p=pathPt(t);
    ctx.beginPath();ctx.moveTo(p.x,ey-gw/2-4);ctx.lineTo(p.x,ey+gw/2+4);
    ctx.strokeStyle=r>=rl?'rgba(255,255,255,.15)':'rgba(255,255,255,.08)';
    ctx.lineWidth=r%4000===0?2.5:1;ctx.stroke();