i shoot a gold cup trophy. had about 2000 rounds fired from it. My problem is that i have already replaced the stock plunger tube because it came loose after 500 rounds and i replaced it with an ed brown. The ed brown plunger tube is loose again. Want to know if anybody has any idea about my problem before i go to a gunsmith. Right now, i just sanded the inside of the left grip so that the notch at the top of the grip pushes on the plunger tube and keeps it from moving. The plunger tube gets loose every time i engage the thumb safety. But havent had any malfunction yet while firing.
