Hi All. New camper, and my used Swift Charisma 2005 is getting a good clean. Question on gas. I've got no gas at any appliances. Gas is getting through the regulator as I disconnected the outlet pipe and opened the bottle a little. All the valves are open on the manifold. Couldn't find any hidden valves anywhere else. What on earth could I be doing wrong, or is it a job for the pros? Tried 2 cylinders, 2 pig tails, leaving hob on for 10 minutes. All to no avail. Thanks!