I have a win 94 30-30. It was cheep and it cycles cheeply, but it is accurate (for a brush gun), clean bore, and the finish is 90%. When i try to feed rounds in the first usually goes in ok but every one after that is a struggle. the spring gate swings and stops on the round already in the magazine. I cant get more than 3 bullets in the gun, and one time a bullet sprung back while the lever was on its way shut and somehow it got jammedback under the bolt. Now to use it safely i single load strait into the chamber. its reminding me of my ithica 37 when it used to dump shells. i replaced and tuned a piece that held the rounds back while not cycling, now its my favorite shotgun. What parts can i replace and refit to get good function out of this rifle?