My bf worked there for quite a while. Only 1-2 of the older guys working there knew a good deal about our car. A lot of the techs are younger (20's-mid30's) and concentrate on the newer models which make up the majority of their business. They also lack a lot of the diagnostic tools that are required for our car. There is a shop that works on older Mercedes vehicles, but their prices are extremely high. My bf and I have champagne dreams on a tap water budget, so money plays a large role in who does what, where, on our car.
Thusly we are here looking for help cause experience has shown that forums tend to have better (free) advice xD

Thanks
-Amanda