Well you could try to fix the self leveling or you could replace it with bilstien sport shocks and sportline or eibach/h&r rear springs. This would most likely be cheaper or about the same price as fixing what you have. I got rid of the self leveling and I like it a lot more. I have a set of new rear bistien sport shocks that Im selling for $140 includeing shipping cod. Let me know if youre interested.
1985 190E 2.3-16
1957 220S(running one day, I hope!)