I've been following a bunch of Tiffin threads for the past couple of years in the course of researching our purchase. Most of the stories I have read about people going to Red Bay are from three categories:
1.) Those with expired warranties with problems that crop up and Tiffin say they will fix it. Keep in mind, these coaches are out of warranty. How many manufacturers would fix a storage bay on a 6-year old coach? Or, how about radius cracks on 5-year old+ coaches?
2.) Owners who buy far away from home for price or are full timers and go to Red Bay for everything. (Once I retire, if still Tiffin owner, this will be my choice if Tiffin still offers this service.)
3.) Sometimes, a warranty issue arises that the local dealer can't fix. (Who hasn't run into inadequate RV dealers?) Tiffin will say bring it to us, we'll fix it. I have seen stories where Tiffin finds other service providers to do the job too.
Factory service/repair is a great option to have. One of the things I checked while narrowing down our options was if factory service/repair was available. I thought it would be a good option to have.
By the way, I'm still not sure if we made the right choice (the grass is always greener). We have had a few small items and one major headache. All were fixed by the selling dealer except for a couple that I chose to do myself. The proof will be in the long run, I guess?