X-Valve Leak....HELP!

[MrNasty]

I have a classic powerfeed body that has the X-Valve and LvL 10 but I am getting a hissing noise from the bolt but after a few shots it will stop. What could the problem be. Does it just need to be broken in its not even 5 days old yet and had about a case run through it. thanks for the help.

[GoatBoy]

Perhaps you should tell everyone what you've already done to try to troubleshoot the problem yourself.

I think most people will say to try a smaller carrier.