Well I went out to open the trailer today.
I decided to fire up the furnace so off came
the propane tank cover and the piece of
press board that holds the top of the vinyl
cover in shape was grey and furry yuk..
The good news is the fix seemed straight
forward, I removed the press board, traced
it onto a piece of Lexan (plexi would work also)
cut it out sanded the edges put it back in the
vinyl cover and now the mold should have nothing
to feed on.
On a brighter note turned the propane on and
the furnace fired right up.