I have an ar10, 20 inch Rainier barrel with rifle gas. I use a utg ar308 A2 style stock, spring and buffer. It's throwing brass at 1 o'clock with recoil similar to a bolt action. It's got an aero precision BCG. Is there anything I can do? I want to use a can at some point. Is an adjustable gas block the only answer or a heavier buffer/spring advisable?