The truth to the twist issue lies somewhere between the two extremes. You actually want somewhere between 5 and 10 twists per foot of string/cable. Too few can lead to peep rotation issues and too many is an indication of an overstretched, or too long of a string, or you timing is way out of whack.

In order to properly measure the tiller on a single cam bow, you need to run a piece of string between the axles (top to bottom). Use this as your reference measurement to the point where the limb pocket meets the riser. You can't use the string because the cam and the idler are rarely the same size, thus the string is not perfectly square to the riser.