I have a Taurus 1911 which I like plenty, I just didn't like the look of the hammer, so I bought a Wilson combat one to replace it. After getting the hammer installed and the gun re assembled, when in safe the hammer will move slightly when the trigger is pulled, and when the safety is disengaged, the hammer will fall to half cock. I DID NOT touch or replace the sear, and the thumb safety is the one that came with the gun. What is wrong with my pistol and how can I fix it? I am really pulling my hair out over this one