Humm, we too had to replace the shower surround, 2010 Silverback RE29. We dropped the rig at the dealer fall 2013 to make repairs cause by a tire that de-laminated. Trailmate was the brand (China Bomb). Picked it up spring 14, checked the repairs and left for the ocean. Upon arriving at the ocean discovered a crack between the screw hole on the pinchy clip that holds the shower head and the top of the shower wall. Caulked it and taped it to get through last year, fixed it this year for almost $800.
Frankly, I thought the pinchy clip was Mickey Mouse solution. The white screw that held the clip rusted. Not a quality solution.