I've got a older 77/22 with what appears to be a mis-aligned barrel. It shoots tight groups but consistently to the left. I thought the stock was warped and the scope goofed up, but after closer assessment it looks more like the barrel isn't quite square to the action. I've shimmed it at the front of the stock and this seems to solve the problem from a practical standpoint. Anyone ever see this and is it fixable? Thanks!