Hope you issues subside soon. I have been fairly pleased with how LaMesa here in SLC has "made up" for both design issues as well as bad factory QA for GulfStream.
I would recommend LaMesa based on my experience.
Just remember, motorhomes are built to make it from the factory, to the dealer, sit 3-12 months, go to the customer, and then survive through the warranty period with as little repair possible. Beyond that...well that would affect the bottom line too much...GS is not unique in this dept. But what are you going to do...thats why I think people need to educate themselves on the repairs and this is why I am fighting so hard to get wiring diagrams and such from GS. I know things will break...I just refuse to pay the outrageous $110/hr shop rate!
2004 Ultra Supreme Class A 30'
- Added hard-wired Pro-Sine 1000 Inverter
- Converted batteries to 4x6V from 2x12V
- Added Bully air-horn
- Added Safe-T-Steer