Well I have a PMI Piranha GTI (with an electronic board)the board comes standard in the gun already.. Anyway i have a co2 leak.. its not the orings on the barrel bc i changed it and it works on all my other guns and its not the bolt bc i just bought new orings for that aswell.. It seems like its coming from the regulator.. If anyone is willing to help add my skype: Snowhaxx .. I will plus rep to anyone trying to help. Thanks!