I'm not sure if the basement doors are the same, but some of the foam cores became UN-glued from the fiberglass door panels on our 05 Dolphin. After cutting out some of the caulking on the 2 sides, I pushed an 3/4"X3/4"X 2' angle between the door's core and edge of the door on each side, then squeezed the core into place with 3 C-clamps, then fastened in place with 4 pop rivets. Thin pieces of wood where placed under the C-clamps on the outside door surface to prevent damage. Doing this on both sides of the doors permanently solved this problem.
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Ellen & Greg
08 National Dolphin DL-35Ci, RoadMaster Rear Sway Bar, Rear Trac Bar, Koni Shocks Front,
Workhorse W22, Kelderman Air Ride, Towing 2016 Smart Car
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