Dan, dropped the unit off at the dealers and as far as the water heater goes, burners probably need adjustment. Then off to the Chevy dealer again. The service guy was not very friendly, so the wife let him have it. He just laughed it off as if this is all a big joke. As we were leaving a couple were looking at the same unit you have. Well, I had to get my two cent in and tell him all the problems we are having. He was buying one anyway, said two of his friends have the Trail-lite and have never had any problems. I say good luck to him. The owner of the dealership called about the radio reimbursement, $200, and said the dinette window will have to be pulled out and redone to effectively stop the leak. I'm afraid this will cause more problems, but have to wait and see. I can live with the minor stuff, but I'm more concerned about the darned engine light coming on.
No mildew so far, but we haven't had a need to use the air yet. Will keep a check on that also.
I was hoping to keep the unit for five years, but if the problems continue I may consider selling in a year or two. Also checked into the lemon law here, but it seems to apply only to motorhomes, not RV's. I may eventually pursue this further.
Even though I'm satisfied with the handling, power and size, can't say I would buy another Trail-lite.