FlashBazbo

A few weeks ago, my OPEN U.P. dismounted from an indoor trainer. (The rear thru axle backed itself out.) In the resulting crash, the trainer flywheel sliced two cuts in the left seat stay and the left dropout got "boogered up." OPEN made good on crash replacement but let me keep the damaged frame.

Now that I've recovered from the trauma, I'm considering having the damaged frame repaired and building it up as a single-speed, MTB-geared, go-straight-up-mountains bike. I've read several threads in the forum recommending carbon bike repair services, but no photos or costs -- and very few experiences -- are in any of the threads. For those who have had carbon frames repaired professionally, who did you use? How did it go? Are the repairs holding up? Is there any advice you would give? Anything you wish you had done differently?

(And . . . how much additional cost is a full frame repaint rather than having them match the OEM color?)

Thanks in advance.