I just bought a 1927 Argentine Sist Colt 1911. I only paid $440 for it due to the finish wear and because the barrel has been replaced with a Colt barrel. I could have bought a new RIA for this amount but wanted a knock around pistol to keep under the seat of my car and figured a new gun would end up being stored and not used. Anyway, question: It has a stiff trigger pull. Before I replace the hammer, sear and perhaps the trigger have any of you run across this and could shortcut me as to what the actual problem is?