bad airleak on classic

[magn00b]

There is a pretty bad leak comming out of the back end of my mag, ive replaced most of the orings back there, and still no sucsess :( ... same thing happens on both c02 and nitrogen. Please help :(

[magn00b]

Just to provide some more information about the mag, it is a 68 automag classic, has an eclipse kit on it, drop forward, and an expansion chamber for c02. please post possible solutions to my problem.
Thanks

[Won Hunglo]

Not just most of them.

[jewie27]

Turn down the velocity on your 'Mag and make sure you put the Reg Seat back in the valve.

[magn00b]

Thanks for the advice, ill change all the orings and mess w/ velocity, but could it have anything to do with the reg pin assembly??

thanks