Weird rapid fire and air leak

[de rogue]

Hey all I'm at my wits end. I'm having a problem with my classic will get one mabey two clean shots with it be for it starts to double fire or rapid fire a burst
then it will very often start to leak down the barrel. If I hold the trigger down it stops the leak but more often then not when I let go it starts again. Have replaced every rubber part in it and even the spring with no luck.
any one got any sugetions.

[Havoc_online]

did you replace the bolt spring with a new one, or just another one? did you change anything on the gun recently like grip screws or a grip frame? make sure the sear and trigger rod are clear and have nothing blocking or slowing them down. you still have your bolt bumper on there right? is your velocity set right?

[codeJockey]

I had a similar problem w/one of my mags. I put in a different power tube spacer & that took care of it. You may want to give that a try...