Re: e trigger problems
It's possible that your regulator isn't letting air into the gun fast enough. If that's the case, every shot after the first one would have slightly less pressure behind it, eventually resulting in the gun not being able to re-cock. When you take your finger off the trigger to manually re-cock the gun, air pressure re-builds and you can then fire successfully again. Can you increase the amount of time between the shots when in full auto? Or maybe try 3-round burst to see if that works.