I will be replacing the air cells on my 91 560 SEL soon, and I was reading some posts at the mercedes coupe website, and some people were talking about replacing a "set of rubber spacers for the shaft on the hydraulic rams inside the rear springs" at the same time.

Can anyone comment on this? first time for me to hear this. any other parts that I should consider replacing while I am replacing the air cells?

thx
emmy