RE: Do I need to adjust my tiller?
Hunt,
I could be as simple as keeping the limb bolt turns equal, but there are differences in limbs. If one limb is weaker than the other the stronger limb is doing more work. In setting up your bow its good to know that you have equal tiller as a starting point for tuning the bow. The 3/16" measurement you are mentioning may or may not be out of tiller!!! Without the use of the datum line we don't know unless your owners manual states how to measure the tiller otherwise. I would call the manufacturer or your dealer to confirm the procedure they suggest. The datum line method is a very accurate method of getting the correct measurements.
As far as performance gain or loss it depends on the bow design. Many archers tune their tiller to help them hold on better in the shot and improve their grouping. There actually is an advanced tuning method called Tiller Tuning which starts at equal tiller. Most archers probably shoot their one cams at equal tiller.
Aim Hard!