im new to paintball and iv been given a classic smart parts impulse marker. i know its probably not ideal and is out dated or whatever, but for free, im not moaning!!

only one problem, when he gave it to me he said its got a gas leak and the gas isnt lasting very long at all, changed the air bottle fitted new o-rings and applied ptfe tape, basically theres no air leaks at all now, however, when im firing a shot, most paticularily the very first shot it seems to be using a LOT of gas, a bottle lasts me all of 5 minuites! its asthough its using way too much gas to fire each ball,

i know parts for this marker are going to be hard to source but id really like to get her working and get myself some bruises + the fun that goes with it!

any help will be greatly appreciated guys <3