What kind of rail is this?

[Rudz]

Shorten the line and try to run it straight, maybe try diff fittings or stronger macro, I had one with a slight U and it never leaked, set up like marks only I had a co2 bottle and not a cci 12ie changer

[Frizzle Fry]

Which is funny, because co2 has been run thru xvalves before without instance.

Just kinda gotta "Know what you're doing"

I can understand the whole pump thing, but I had a friend destroy all the o-rings and quad ring in one of my X-valves by running anti-siphoned C02 through the marker... It even had a micron filter.