I just bought a used Browning Hi Power which had a trigger job done and mag safety removed at some point. My question: When I rack the slide and use the slide stop to release it, the web of my hand puts a little pressure on the back of the hammer and once the slide is released the hammer follows the slide. I think that's unsafe even though the half cock notch still engages the hammer. I also had 5 failures to fire with light firing pin strikes on the primers out of 150 rounds fired. I'm thinking about taking the gun back to the store to exchange it for something else. What do you guys think?