When I load up my supernova into the magazine loading port the lever stays up sometimes instead of dropping down. Then when I go to chamber a round it will drop the live shell out the bottom instead of into the chamber. Sometimes it will load a round but when I eject the shot and pump reload the next shot it will drop the shell out the bottom. It doesn't happen every time but I wanted to know if anyone else has had this problem or knows how to correct it.