How do I install horizontal propane tanks in my Lance 1161?

Our Lance 835 had horizontal tanks and no one would fill them herfe in Huntsville while they were mounted. The tanks were marked "must be filled while vertical" so I always had to remove them. We now have an 1050s with vertical tanks. I agree that you will have to get a different style tank to use as a permanent mounted one. I would recommend looking at the tanks used on small forklifts for a smaller size but they may still be to large. Rick