I have a 12 ga nef pardner pump that will only eject the shells if I slowly rack the gun. If I try to rack the next round too fast the next shell jams against the spent shell. It does this with unfired and fired shells. The ejector and extractor both seem to be in fine shape. Its doing this with 2 3/4 and 3" shells. I wouldnt mind this problem when just shooting clays, but when I was dove hunting yesterday it was very difficult to remember to rack the next round slowly, and I missed quite a few dove. Any help would be great. I havent ever heard of a single problem with these guns, so I think its something simple, especialy knowing that it will not jam if I do it slowly. Thanks