I am trying to tune my brakenbury drifter with carbon arrows. I have tried about every spine arrow I can get my hands on, with every weight combo up front, at all diferent lengths. Tonight I tried building my strike plate up and walla, I was able to get it to tune up. If I do not build my strike plate up, the arrow sits perfectly at center shot. Can some explain to me why my bow shoots better about 1/8" out from center. And is this to much to build it up. I used a golf tee tonight.