I have a G5 sight mounted on my Archery Research AR31 bow. I just switched to carbon arrows and I am currently shooting about an inch low at twenty yards. The problem I have is that I'm out of vertical adjustment on the sight. I have the sight mounted in the lowest set of sight holes on the riser, and the sight cranked to the lowest setting. The second pin is on at twenty, but I can't get the top pin in any suggestions. Should I abandon the top pin or try another modification?