I purchased a "problem" GT 500 off of a friend a few days ago and followed marzomi's advice: I contacted Elite and requested the shim kit and inserted 2 .045 shims on the left side and 1 .035 shim on the right side. The bow is now shooting as good as my Fury X tuned GT 500 (just not as fast); my buddy wants to buy it back now. The CS is 7/8" and BH and Field points are grouping together at 50yds and it shoots bullet holes thru paper with Maxima 350's and Victory V Force HV1 .300's. This was the solution for this "problem" GT 500. Thanks for sharing.