I feel your pain. If our second MH had been our first one there never would have been another.
Fortunately we already had the RV bug so we jumped in with both feet and in 2000 we ordered our first new one, a Newmar Dutch Star gasser. We've owned (2) more Newmars since, owning our current one for 15 years now.
I'm happy to give you hope, it can get better.
Since 2000 we've made exactly ONE trip back to a dealer. Sure we've had a few things wear out, and I'm fairly mechanical, but obviously we haven't had anything too complicated.
Keep your chin up, get things fixed, and keep in mind your fix will most likely be better than it came from the factory.