I'm brand new to crossbow hunting since having shoulder issues. Bought new xbow about a month ago. Set up on a picnic table and started shooting. I'm getting maybe 2 shots at best in a general group and have one shot that will be 8 to 10 inches off to one side or the other. Used same arrow and swapped them out. I've notice the ds sticker on the arrow is almost faded out from I guess friction when shooting. I wasn't sure if that is normal or the culprit. I'm using the hawk scope that came with xbow. Anyone have any advice on grouping?