I have a new to me 1998 Viking 1706 and I'm trying to get it ready for camping. It's in good shape, but the previous owner said she really didn't use the propane furnace or stove. I'm pretty sure the current propane tank is empty, so I need to take it off and get a refill. Unfortunately I can't seem to unhook it. Here is a picture of the top of the tank: http://i.imgur.com/FPDmx.jpg I can't seem to get it unscrewed from what I think is the pressure regulator. It just doesn't seem to budge. There is a note on the larger piece attached to the tank with an arrow for tighten, but I'm not sure if the direction refers to tightening that piece or the piece that's coming from the regulator. I tried it both ways anyway, and just can't move it. I've also been reading that there are different types of propane tanks. Is this the common kind that I would use for a gas grill, or do I have some sort of older version that needs updated? I'm slightly concerned about this hookup under the cabinet for using the stove inside: http://i.imgur.com/vKsEf.jpg The pipe coming up from the floor isn't really attached to anything in the hole in the floor, so it wiggles. Is that normal? There seems to be some sort of sealant around the hole, but it's not really doing anything. Thanks for the help! I'm new to this stuff!