HI, everybody i have had this 1894 marlin lever action 44 rem mag for about 31 years and i actually just sighted it in this deer season and i love it,i shot it when i was a kid and it jammed alot on me and i didnt know what i was doing and it has a lot of boogered up screws and screw driver marks on it.well i want to fix it up so i can give it to my boys when they get older. i just got a new ss magazine follower for it and the old one wont slide out the muzzle end am i supposed to break it down and remove it from the breech end or what also what is up with the one piece firing pin and new springs is that a good idiea to put on my gun and why