YUP, hunter9022, I did know that much, but thanks anyway.The way I check my timming is to tape thread just behind the first hole, split that hole, split the next hole,then run the thread all the way down over the idler wheel, then tape it off on the back side.
NEXT,I measure the distance from the string to the thread,just up from the end of the cam.Then I' ll measure it on the other end, the same distance from the limb tip.I think this an accurate way to do it.