Hello. I shoot an AR34 with a 29" draw set at about 67 pounds. I am shooting a 28" Goldtip 5575 with a 100 gr. fieldpoint and I'm shooting a release.

Earlier last week I increased my pull by about 5lbs.. Every since then my 20 yd. shots are not grouping butI can put all four of my arrows in a three inch circle consistantly at 40 yards. My 20 yard shots tend to be 2-3" to the left and 2-3" high and low.

I'm thinking my arrow is fishtailing because it may be underspined. What do yall think? thanks.