hi there. i'm brand new here and this is my first attempt writing or asking something. i'm new at archery, but have rifle hunted for some time. I'm shooting good groups at 20 yrds, but when shooting broadheads they are consistently 5-6 inches low and to the left. both are 125 grain. I'm shooting a 10 yr old hoyt bow at 63 lbs using thunderhead broadheads. I know they're a cheaper broadhead. can that be my problem? would raising to 70 lbs bring them closer? I must confess I harvested a nice buck at 50 yrds last fall and the broadhead didn't drop at all. I hadn't a broadhead target yet at the time so just trusted the gentleman i purchased bow from that the broadheads would shoot right on with practice points. I was also wondering if keeping 125 gr field points and switching to 100 gr broadheads would bring them together? again, please excuse my ignorance here- I don't have any friends who bowhunt to bounce questions off . thanks .