Purchase advice CL 600 EZ 02/01

Hello dear community, As far as I have read everything I could find at CL Kaufberatung. However, I still ask if there is anything else to consider. Have an offer with the following data: CL 600 02/01 46 000 KM Accident-free Full except for auxiliary heating and AMG package 2nd hand – checkbook maintained € 29,900 Are there things I should consider during the visit except the usual visual checks and test drive?! I heard there are some with rust at the transition from the C- Column to the body because here steel meets aluminum. Furthermore there are problems with the ABC spring legs. Then still problems with the window seals. Anything else ? Greetings from Munich, Fabian