I just used a March performance pulley and use the stock location and that stopped it from throwing belts. I think my shift light was set at 6800, but I hardly pay attention to that LOL I was wondering if you noticed you were able to stop the belt from throwing by moving it closer which would make sense? And by the way when it did throw a belt it was almost great because all I can think was less drag more horsepower! kept it to the floor!...