I have a minimag with the pump kit added. On occasion when I play with it not in the pump mode, the bolt freezes up and I have to pump it to get it to reset. Other times when in pump mode, it just seems to go semi on me. Any ideas? I haven't tried changing the spacers yet, but I thought I drop this question first before changing anything. Also I assume that I will have to get rid of the pump kit in order to get an emag upgrade for my minimag. Thanks