My dometic fridge was working very poorly last camping trip -- could
barely get below 60F (in 90 degree weather) and the flame looked weak
and yellow through the glass.    So, I figured that the combustion
chamber must be clogged.   Today, I removed the flue vent and
vacuumed the intake/exhaust tubes, and was just about to pull the
fridge out to clean the combustion chamber, when I realized that the
propane tank is empty, 100% bone dry.

When I was camping, the stove burners were working fine.   So I'm
wondering --  is it likely that the combustion chamber is not
clogged, and I was just running low on propane, and somehow the
pressure was low enough to screw up the fridge, but not low enough to
affect cooking?