Iam having trouble getting my broadheads to shoot consistent. I have tight shot groups with field points, but my broadheads are not shooting consistently. I switched to different arrows and thought I fixed the problem but they started shooting bad again.

Im shooting 100 grain G5 montecs carbon steel broadheads on redhead carbon fury arrows 6075 29'' length. My bow is a Diamond Black Ice and it should be at 60 pounds, I don't have a scale. Im not sure what to do I was thinking my bow to a bow shop but thought I'd get some input on here first.