Seems to me someone was going to start a sticky about places which did/performed great service, oh well.
Cummins in Chattanooga, TN; Coburg, OR are my go to shops for the engines. Coburg store did some brake work, excellent, fixed hydraulic hoses, again excellent. Was treated first class and Coburg has nice lounge, it's a coach care facility. To find them -
https://www.cummins.com/engines/moto...rvice-location - also please remember Power Club members get 10% off parts and service - special now click link.
The Detroit/Allison dealer in Ridgefield, WA is also the best place I used for transmission service, great place and they do more than just transmissions, changed coolant for me once, 105 for the labor, I provided coolant. Used authorized dealer in Chattanooga for Allison fluid filter change last fall, did good job, very expensive, no discount for veteran. Since new coach, will take it to Gaffney, SC.