Anybody up on the newer Coleman duel fuel lanterns. Mine the main control valve is really hard to turn, squeaks when ya do, and is acting up. I thought it was a bad generator, but it seems to be the main valve. I taken it apart, down to the tank an valve an pump....this is one of the newer models that ya can adjust for brightness. I've never used anything but Coleman fuel in it, but left it stored for a couple weeks without bleeding down the pressure from the tank. Anyone got any ideas? The control rod for the generator moves in sync with the valve, but stiff an noisey. Tis been hard to light, and not as bright as it should be at times, then ya fiddle with it an it starts working....but it's interferring with my fishing time. Thanks.