If the door cards are in reasonably good condition I use a marine epoxy timber guard saturation system to make the cards waterproof.
Just paint it on until the cardboard accepts no more. Don't over do it! Reinstall after about twenty fours or until the stink has gone.
One of my 360s door cards were treated 35 years ago and are still in good condition as of last week when I lubed all the in door mechanisms. The car has always been kept outdoors.
All my other cars have been treated too.