Plastic trim pieces (not Elkmont)

Hey can anybody help me find a supplier for the plastic trim pieces that protect the body of the camper when it clam shells down. They are white and about 3 in wide and they protect the body from the cushion gasket (weather seal) on edge of shell. Also any other trim pieces or the cushion gaskets themselves. I have a 2006 2720 SL that was mistreated and I'm trying to renovate. also whats a good contact cement for the job.
Thanks
UNOM

PS also looking for rubber bumper cushions that are on the frame that the clamshells rest on when closed.

[B_and_D]

I ordered ours from the factory.

[Logman]

I just got the trim that covers the front outside corner.I ordered it fron the Nebraska factory, got it right away. I glued it on with the best quality clear silicone i could find. Its holding fine, water tight so far.