I've been filling my propane tank at a local American Legion hall. It's a flat rate regardless of how much propane you need. I don't mind feeding them some small income and I don't mind a few extra bucks here and there; it's small potatoes compared to the cost of the gas to haul our Lance around on a vacation. But the last time I filled the tank my Mopeka gauge reported it was only about 68% full. Well, I don't mind not getting quite as much propane as I was thought I was paying for but I do mind the idea of heading out for a 2 week vacation with a tank that is 10% low to start with. I have to decide whether to go back there, or if I do whether to mention it and ask the attendant to check the weights carefully.