i looked and looked on mt 98 discovery for a roof leak. resealed the roof and all new lap sealant and was still getting the water inside just behind the shower. then i got to measuring and came to realize the leak was from where the awning mounts to the side of the unit. pulled the screws out and put new sealer on them and no more leaks. i went through a lot when i should have looked there at first.
1998 Fleetwood Discovery 36T ..w/5.9 cummins