I've had my Plinkster almost a month now, and I'm very impressed with it's accuracy. Put about 400 rnds thru it and so far, not one jam or FTE. One issue that keeps cropping up is the bolt sometimes hangs up when I try to close it after inserting a full magazine. I pull the charging handle out to unlock the bolt, and when I let it go it does not always go into battery. It appears to be hanging up on the magazine. Once it goes into battery, and I squeeze the trigger, it has never failed to eject the spent round and go into battery... just initially when inserting a loaded magazine. Does anyone have a suggestion as to what might be causing this? Is it a magazine issue? Is it a feed ramp issue?