I got VERY lucky when searching for an authorized Onan shop in the Colorado Springs area. I stumbled upon a hole in the wall shop near downtown, dirty as hell, with crap piled up to the ceiling all around the 'office' area.Mack, the proprietor of Industrial Repair, is a magician when it comes to gen sets. They love him, and want nothing else but to make Mack happy.Very fair on labor or parts prices, and doesn't mind educating you about your machine while he works on it. Has a sense of humor too...calls my converted Thomas "The Bookmobile"...LOLIf you find yourself on I25 through The Springs, and need Onan service, you'll be in good hands there.Jay87 SaftLiner