There is a difference between what I call correct timing, and correct syncronization. The cams will always keep in perfect syncronization and roll over at the same point in the draw cycle on a binary cam (as far as I have seen messing around with mine and other peoples bows, and from what I have read). You can however throw the bow out of timing and the optimal position for the best efficiency fairly easily, and getting it back into optimal position can be like herding cats (darn near impossible it seems at times[8D]).