hey all!! i recently bought a m1 carbine, universal, a couple of weeks ago, took it to the range, and at first the slide did not go all the way forward, after hitting the charging handle a couple of times, it loosened up and shot fine, i like this gun alot. took it home, cleaned it and that was that. took it back to the range, and the charging handle stuck, and it was not ejecting the spent round, i had to do it manually. and then it got stuck again. i striped it, and found the it was getting stuck at the gas block, this was with no mag in it. its not the mag, its not the ammo, there is a tiny bump by the gas block, where i think its getting hung up on. has anyone run into this problem? i dont want to get rid of it, i like this gun, its accurate up to 200 yards. and its fun to shoot. please help. any ideas or suggestions? i will probably take it to a gunsmith to get this fixed.