I just added a 1968 model 444 to the other Marlins. I got it used for fair price. The action felt gritty, and only problem was the rounds would hit the top of the chamber. I disassembled it and clean everything up including the magazine tube. I reassembled it and the action was not gritty, so I went to sighted in and put one round in the magazine tube and open the lever and it stuck open with the round about half way out on the magazine. I had to remove the level to remove the round. I made sure all the screws where tight and tried it again, with the same results. Any idea on what did to cause this and how to fix it. I am looking forward to using it during deer season, and my son can use the model 30AS in 30-30. Thanks for any help or ideas.