Hello, in a few days I will pick up my new SL 63 AMG with the 6.2 liter M156 engine. Now I have read in the net of weak points of the engine (jack shaft adjusters, breaking screws etc.). Since I want to drive the vehicle for a long time, it is very important to me that the aggregates also work clean and unproblematic. My vehicle is a 2008er and has 120,000 km down. The vehicle was driven by an older Dr. and was every year, every 10,000km at Mercedes for maintenance, a really well-kept vehicle. Now to my question: is it possible to check the vehicle or the engine for these flaws purely preventively and to exchange worn parts if necessary? If so, is there a well-known workshop or specialist for this? The ABC chassis problem is known to me, will have a flushing done. Thank you all in advance and look forward to your comments. Greetings Can