, Welcome Aboard Tom G., my advice it to clean the gun well, including the area between the scope rail and barrel. Tighten all screws firmly and try the gun, first without the o-ring then with it. If your buttstock feels loose remove the recoil pad and tighten the stock bolt with a rachet, 2 long extensions and a 9/16th's socket. If it is not loose don't worry about it. Shoot the gun first before you play with it, you may have bought a shooter right out of the box!!! You are on the right track with everything you have so far. shoot slowly from a good rest, rest the gun well back on the forearm, near the hinge pin, pull the trigger all the way back for each shot, don't just "trip" it. Use good basics of sight picture, breathing and trigger squeeze. I think you will like what you see....<><.... :grin: