I'll add the same welcome. I don't have much to add on the shoot-in problem as I don't use pellets. My TC firehawk wont shoot them as only one pellet goes off. I assume that your on a good solid rest with no foward hand pressure torking the stock. You are probably correct on the over cleaning especially if you use any kind of liquid between shots that might partially wet a pellet. I run a copper brush after two shots then shoot two more ect. Otherwise, everyone else has pretty much covered it. Good luck!