***More Expansion Problems***

If it is making a sound like it is out of air, then that means one of 3 things.

1. Either your Hammer o-ring is shot and not seating properly
2. You don't actually have a 1/4 tank left and are almost out of air anyway
3. Somewhere there is either a leak, or a blockage which is starving the valve for air

Check each of these and see if you can't narrow it down for us.

BOOM!Headshot wrote: well i know that im not completly out of air cuz my cousins fill their own co2 and they had a scale and it said there was like 5 or 6 ounces left,

Well, seeing as how you can't tell just from putting the tank on a scale, I'd like to know how they reached that conclusion. Unless they have the tare weight of your particular CO2 tank, there's no way they could know, each tank weighs differently. Also, if they're filling your tank, they might not be doing the operation properly. You have to dump the CO2 that is left in the tank to chill it, tare the scale, THEN start filling and go to .5oz under what the tank weight is supposed to be to allow for excess expansion/errors in the scale. If you've been filling tanks in a shop for a while, and doing it right, you can usually tell if someone has a decent amount of CO2 left, but you can't tell how much, by slowly tilting the bottle back and forth across the flat of your hand to see if there is any compressed (liquid) CO2 left in the bottle.

Now, short of your cousins not being experts, the only other thing would be that there is a blockage in the flow somewhere. to test for that, you'd need a pressure gauge with a flow-meter on it, and I doubt you want to plunk down the cash for that. Just rip the whole assembly (ASA, Lines, X-Chamber, and Vertical adapter) off the marker and re-assemble it carefully after flushing the system with some plain tap water.