I just picked up a new to me Springfield M1 Garand. It was a CMP pickup that was a rack grade. It had great metal, terrible wood. Well I also bought a CMP stock set with metal and installed that. I cleaned/lubed everything up and went to the range. When I started shooting after about 5 rounds the trigger guard opened up. For the next 11 rounds I shot about every 2-3 rounds the trigger guard would open up. The trigger group fits the stock very well and I get a bit of tension about an inch before the trigger group closes. I think the problem is the hook that holds the trigger guard shut doesn't hold a lot of tension. I am tempted to bend this hook a bit more to give it more hold. My trigger guard is stamped so I think it should be easy to do. Any other suggestions on what to do?