Originally Posted by freddo411
Probably hopeless, but I thought I'd ask. Anyone have a third party replacement?
I found a new cylinder and key for the L400 at my local big-RV store in the parts department, for less than 15 bucks. You might consider going to your local RV stores and asking them, as sometimes service parts will be left over after the main item is discontinued. Phoning would be easier but may not give you the correct information, as it is likely just on a shelf somewhere.