Just got a new 1.2 gallon tank with the new opd valve for my mr heater boat heater. My first tank was harder than hell to fill, we finally managed to get .8 gal in it, hook up the heater not enough gas flow to light it. So I take it back and get another, actually get a gallon in this one it was slightly easier to fill than the last. I hook up the heater it lights halfway I turn it up no change. These new tanks are a friggin joke, anybody else have problems with thiers.