Congrats and welcome. We have mixed feelings about Windish since "Abby", the Airstream tech extraordinaire left. He worked on one of our airstreams and our S.O.B. motorhome.
Intermountain Coach in Colorado Springs seems to be pleasing locals who go there. We have no experience with them, except in purchasing our 2006 Bambi Quick Silver. The axle inadequencies of the Bambi, causing us not to use it, isn't Intermountain faults, so I have nothing negative to say about them. Dan, the owner, is always happy to help out the Denver Unit whenever he can, and that goes for his service crew. Hope this helps.
JIM n CHRIS
"62 ATW Overlander, '51 Flying Cloud
'67 GT, '90 Squarestream 29ft, 06 Bambi, Bigfoot slide in/GMC Denali K2500, Marathon Coach, Class A.