Bluey, if you have sponsors, they would be the best people to talk to.I would like to say as an extra that the first thing I did was to screw the end cap all the way in then bring it out to about what it was then fire it , this is because sometimes the Sear gets stuck in guns and is a good way to release it, THIS DIDN`T WORK this time , If it was that, plus when it`s gassed up and switched on the bolt does go forward even with the air going mad .. Bluey