Possibly investing in some ACC shafts, looking at Easton's chart I can go either way....3/49 or 3/60. Generally the 3/49 seems like the best of the two for my draw length, arrow length, draw weight, cam, etc., but I like a little heavier weight. Thats where the 3/60 comes in. Will the stiffer 3/60 cause tuning problems? My hunting draw weight is 63-65 lbs., draw length is 29.5", arrow length is 28.5" and shooting a Martin Fusion one cam which qualifies as a hard cam. Most likely will be using 4" vanes or 5" feathers and 100 grain fixed blade broadheads. Those of you with ACC experience have suggestions?