Need some help on an RV propane refrig. I hooked up a 20lb tank to it, via a regulator off a gas grill. I dont seem to be getting gas into the fridg, Im wondering if the regulator is the issue. I would think that without anything on the end of the regulator and I turned the gas on at the tank, the gas would come out very rapidly, that is not the case. Anyone play with one of these?