I take my 1965 220sb to an mechanic who exclusively works on Mercedes. I accept that it's always going to be costly, but my biggest frustration is waiting in line for months to get the car into the shop, and on top of that, ALWAYS waiting over a month to get the car back. Is this because the net profit of working on a car like that is not very rewarding.. due to the amount of time it takes to diagnose, find parts, and repair the problem? I think the mechanic prefers to have only 2 vintages in the shop at one time. Is it normal for me to wait 3 weeks without any news about the diagnosis or timeline for my repair? I love everything about this mechanic, except maybe for communication. My car is in the shop specifically for power steering gearbox repair (resealing) and poor fuel delivery/carb related problems. Thanks