RE: Tiller????
i agree on how to measure tiller but being even tiller has no effect on arrow flight just has a effect on how the bow sits in your hand at the draw more weight on top limb bow will pull up on draw, less on top bow will pull down same as bottom limb but opposite results. you want to set tiller so bow pulls back staight on target with out going up or down during the draw.that means more or less on one limb or the other or maybe even tiller will work for you.