You nailed it 97SL320! The independents are sort of in a time warp. After they quit Mercedes they knew everything about a range of cars. The longer they stay independent the less they know about the newer models. My mechanic is a perfect fit for me as he quit about the time my car came on the market. He didn't have much experience with the 120 engine but we took a long, hard look at it and realized it was nothing but TWO 6 bangers on a common crank. We have had no troubles at all with the car except room to work.
Anziani
'97 CL600 56K