I dont know if anyone else has this problem, but I am shooting a Switchback with a 29.5, 70 pound draw and can only shoot Nap Spitfire 3 blade broadheads. I am shooting 100 grains and have tried my Muzzy 100's and the G5's, but both shoot a quarter inch group 6 inches to the left of the target at 20 yards. My practice points are dead on out to 60, but my broadheads are always flying left. My friend advised me to try the Nap Spitfire's and the shot excellent. I was just wondering if anyone else had this problem.