Having owned and shoot lots of 1100s over the years, thought I was an expert. Not so. I CAN NOT get the stock nut off of a 70s 1100 I am restoring for my wife. I have tried everything. I twisted a new Craftsman large stubby screw driver using a large pipe wrench. We used to use tire irons but I am afraid I will tear the spring tube from the receiver, Any advice would be appreciated.