I switched out the T-stat on our previous hybrid and TT. Very easy to do. I like the Dometic T-stat in our current 5th wheel. Couple of links for you:
I got a value for our camper off NADA last week with no subscription required. I was shocked at how high the price they came up with is, I wouldn't pay that price. You can also try RVTrader to get a value. And do a search on craigslist to see what they're asking for comperable campers.
We put up the adhesive back splash tiles a couple months ago. Recently they have been pulling away from the surface, especially at the corners, along the seams, and where they overlap. Any recommendations for some type of adhesive I could use? Home Depot was no help.