ive got a clarke 160en and im very happy with it. but ive been doing a job on my car and ive gone through 3 co2/argon bottles so far. so id like to get a big bottle from boc or where ever you get it from. but can i get a regulator to fit as the gas feed pipe is a small 3mm aprox little pastic pipe. how do i go about doing it. can i do it. any help would be great