Originally Posted by MrJ
That would be awesome! I've been waiting many months for a picture.
Here's the door open at my propane tank. There is a piece of weatherstrip going up each side (only right side shown). There is a piece of the same weatherstrip running along the top of the door (seen toward the bottom of the picture near the latch). The weather strip is about 3/4" wide and maybe 3/16" thick. Mind you, this is I don't know how many years old, so it's likely compressed with age. The door shuts and latches quite tight, though.
As Andy mentioned previously, his records show that the door seals should be the same triangular seal that's used on the entry door to the motorhome. The stuff on mine is clearly not that. If such were present, the storage doors wouldn't close. I checked other storage compartment doors and they had the same seals. Perhaps there was a change from your '76 to my '77. Take a look at your doors sealing area and see if it makes sense for something about 3/16" thick to fill the gap. On the motorhome side of things, there is a small ridge which makes a channel just wide enough for the weatherstrip to fit in.