RE: weird paper tune
Paper tuning is the best way to tell if your arrow is travelling straight off the string. That' s true. But doesn' t tell you if you' ve tuned the bow to compensate for the torque you put into the handle. It doesn' t tell you if the bow is shooting with it' s best accuracy.
I know when I paper tune a bow that I' m more conscious of my shooting form, trying to do each and every little thing exactly right. In fact, I think I' ve got ' paper panic' because I wind up being too concerned about my form. I can' t just relax and shoot like I normally do. I seriously doubt I' m alone in that and it will definitely give you false results.
Tuning for best groups, shooting the way I normally do, works far better.