should my regulator hold pressure ? I have the main valve on top of my bottle and a valve on my regulator . When i first got my bottle i turned the main tap on and with the valve on the regulator off it showed a reading .. it stayed outside while i was getting my garage built, Anyhow a few week latee when i looked the pressure teading was bertually the same so whatever pressure was in the regulator had stayed put. I now have the bottle and welding gear set up, i noticed the other day when i finish welding and turn the regulator valve and the main bottle valve off the prseeure resfing drops to zero withon say 5 mins .. iv put water round the connections whilst everything on and no leaks .. So should the regulator hold a pressure reading once both valves turned off? The regulator is new ,