Originally Posted by cmdrsuds
Bolt stick check orings/ lube it. Before putting it back in try giving it the flick test.
Mike from tech pb says that after a couple of weekends of play with no lube maitenence the marker needed to be adjusted to a higher pressure to keep working until the solenoid release valve started leaking. He also said lubing the bolt fixed the problem. He shows yoi how to take it apart and Maintain the bolt in this video: http://m.youtube.com/watch?v=iXXr1d32gLA
at about 7 min. If that link does not work just type 2011 proto rail into you tube.