You should definitely shoot your field points thru paper and make sure you have proper arrow flight coming out of the bow. Make adjustments to your rest/nock if needed (paper tuning, go to a shop and they can help). Make sure you are using the proper arrow spine and not shooting too light of arrows. If all that is good to go, then head back to the range. If one day the broadheads are hitting where you want, and the next day they aren't, then you should probably just take them off and try something different. Generally for me, if a broadhead isn't flying where I like, it usually misses in the same area of the target, not all over like your case. It's possible that the Shuttle T's just don't work with your set-up consistently. It's happened to me as well. But like most guys are telling you, make sure your form and execution are correct before you start changing equipment. Good luck! Fixed blades are fun!