Thanks everyone for the responses. And I am glad to see you resolved your issues with Greg. As for Daivd's suggestions, that was the info I was looking for. I wanted to pick the brains of L.C. owners who actually take the guns apart and fix them themselves. So, much thanks to Davis and SGT.
On the issue of the receiver swinging open and close during firing, if the problem is a weak main spring (as suggested by David) would it be advisable to heat treat the spring. Remove it heat it up and quelch it. This would strengthen the spring and possibly correct the issue?
Also does anyone have a good method for patterning a shot gun?