Well, just bought a 40cf tank of Argon... if that gonna be unsuccessful, I'll try Nitrogen... I'm already wasted one tank of Argon
well, half of it i just pured in air, cause I was in doubt if it's gonna be enough for sure, so I bought a new one....
As I said, first 2 attempts was with the oxygen masks not a bags, and there seems like was the actual fault... I could still get O2 thru the mask gapes, then I tried a bag, but I sealed it completely around the neck, so CO2 build up and I just ripped the bag of... so for now I made a couple custom made bags with tie strings to attach it on forehead and then release un pull down completely with living 3 or 2 finger rule...