The independent shop down the road from my work no longer does "large" jobs, i.e. even a Honda timing belt. I don't know where they draw the line or will they do this for good customers. I suspect they will... Otherwise, I think they prefer the relatively short jobs with decent labor charges (for them). High margin parts are probably a big factor too.2) A large 10 hr repair job has a fixed amount of revenue. In the 10 hrs (or more) that the service bay is tied up, there could have been a few maintenance tickets (30/60/90 service, T-Belt, etc.) with more opportunity to find additional revenue. Again, the bump in labor rate helps absorb some of the opportunity cost.