Mike I will dig out my notes but if I remember right I used the 60” @28 50lb stack and 12” riser cut 1” off the super lam for a 60” @31” 48 lb don’t quote me on it let me see if I can find my notes , I built that bow thinking it would shoot heavy arrows better but it worked better with light arrows ,I posted it in a thread a while back ! maybe I put the specs there !