Ihave 2 quins, both 60" and #47 & #50 @28. I initally had some grouping like this or would shoot a great group, then a nother one left. I finally figured out the bow was torquing of the meaty part of my hand, put a wrist sling on and hold with forfinger and thumb loosely and watchem pile up, straight in! These bows are smokers, replacment limbs are affordable and they are about bombproof. I am thinking of getting a #40 set, just for 3D. I shoot the Vapor 2000's, cut to 28&1/2, 150 up front,4" parabolics for great flight. Hope this helps. Sam.