RE: Paper tune Vs. Bare shaft
Tune the way you guys want to tune, that is your deal. Just please don't be telling people that bareshafting tells them centershot. Or at least it doesn't tell them centershot when it is way off.
I have yet to have a bow that is not center shot when the string is in the middle of the grip and the arrow is behind the string, even with fingers (This is with longer ATA length bows, this doesn't work with shorter bows).
Here is how I check my center shot. I shot an arrow at 5,10...30 yards (discard all bad arrows and shoot over). The arrows can do 5 things. Fall in a perfect straight vertical line (perfect centershot). Make a C shape which means the arrow rest is too far out. Make a Backwards C which means the arrow rest that is too far in. Or make line from high right to low left or vs versus. These lines mean the spine is out on the bow.
Bow and Blodg try this "step back" method, it would be intersting to all of us to see how it turns out. you have to be "picky" with this method.
I have another little thing to try (You don;t have to try it just think about it). Take 2 pounds off your bow, then tune your way. You will move your arrow rest to fix this problem right? So does taking weight off your bow change your centershot?