Gotcha..found your post....Am I still missing something ? If you lay 3 caps out along the radius, then mark down each side of the level that spans the caps, then cut the caps do you have issues with the overhang varying because you have changed the lenght of the cap when you cut it without it being in the exact place on the curve?
In other words the way I do it each cap is going to fit properly and have the exact overhang because it is cut in the exact position it will sit on the curve. It seems if you contuinue to lay caps out and mark between them at some point in the curve the cap will be "off" because you are consistenly removing their length each time you cut them.
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