I'm using some old GT 55/75 that I got in the late '80s, early 90's. They are grey. I've noticed that there are two pair that group together, but at different spots on the target. Were there spine discrepancies with these older GTs? Is it time to invest in new ones?
I have some old grey ones too, and they do the same as yours. found that if i rotate the nocks a 1/4 turn at a time i can get them to fly to the same point. try it it worked for me.
Thanks stickhorse!
Great tip. I have a similar problem with some of the newer ones I'll try it on.