I seem to have the worst luck with 1911's,my first large cal pistol was a Colt Commander that just wouldn't hit spit,fast forward almost twenty years later and I pick a GI Expert and....yep,the gawd forsaken thing will not work,I tried everything from lots of ball ammo,to polishing the slide rails and it wouldn't run for the life of me.

I traded it off for my M&P,that one just rolls right along

While I like the 1911 I think the 4506 is everything the 1911 should have been.