Family is heading out dry camping in the Adirondacks after the 4th. I got a new propane tank for the trip, connected it, and tried a dry run in the driveway. When I tried to turn the gas control knob to High, it was very stiff. I pulled off the plastic knob and found out I had mostly stripped it! Tried to turn the brass part under the plastic knob with channel locks and couldn't move it. It wouldn't push down for lighting either. Broke out the PB blaster, sprayed it on, tapped it a little, and then tried the vice grips. Got it unstuck with some difficulty. Sprayed more, tapped more, turned it more, and eventually it got unstuck, and even pushed down properly. Lit the fridge without difficulty, let it run for several hours, fridge got nice and cold. I guess the vice grips now need to be in my camping toolbox. Otherwise, a happy ending. Has anyone else gotten this knob seized?