choking it!

[wiggly]

i cant seem to get my mag to stop choking , i have a minimag that i recently upgraded to a x-valve w/level 10 bolt. i got a high pressure nitro tank thinking that it was not getting enough air but it still seems to choke after i shoot off a quick couple of rounds. does anyone know what is the/my problem???

[athomas]

Check your ASA. If the pin is too long, it will cut off the air supply when you screw the bottle all the way in. The gun will charge and have enough air in the lines to shoot a couple of shots, but more than 1 or 2 shots in a row will expire the air supply and the gun will chuff. Try putting a large oring in the end of the ASA to artificially shorten the pin.