Mike, I'm sorry to hear about the problem with the bubble window and sink. If it's any consolation, I think the problems shouldn't reappear, once they're fixed. I base this on 8 months and 7,000 miles with our A128. We've weathered three gales in it, the most recent right on the shore of Lake Superior, which has legendary storms. We just returned from a 2600 mile trip through the U.P. of Michigan, giving the camper a really good shakedown. We're still loving it, and once the overeager installer's damage to your unit is fixed, I'm sure you'll have a ball with it.
It's never too late to have a happy childhood!
Lee, WU0V, and Courtenay, N0ZDT
2011 Rockwood A128
2000 Silverado 1500 pickup
60W solar system
2000W inverter generator