I picked up a PSE Viper (cheap), cause I had shoulder surgery recently and can't use my recurve. But I had to back off the limb screws some to even pull the damn thing back to cock it. Now I have done this to many bows and am fairly accurate when backing off limb screws, but ever since doing this, the flight of the bolts have been "unpredictable". I mean not hitting TWO targets stacked at 10 yards some times! Then the next one might hit right where it's supposed to.
I am unfamiliar with cross bows, have I created this problem by lowering the pull weight of the limbs? Or could this bow just be a P.O.S.?