That's a good one. I can tell you from experience that the cam and a half will shoot fine all wacked out. My brothers bow has been to 2 "pro" shops and you wouldn't believe it could throw any arrow in the same spot twice, but it does.

Cam timing is getting both cams to do the same thing at the same time if not one will be holding the other back. Like crossing the street and pulling someone with you that isn't gowing as fast.I do it by manipulating the strings and cables (need a press).