Just swapped OVPs with my 420SEL, no change in 560SEL's operation. Also, put 560's OVP in 420..420 operated normally.
Another symptom:
When started cold, engine will not start on first attempt usually. When engine does start, economy gauge is at 50% and engine will stall if not given pedal. After engine is warmed up 60+, engine will not exhibit these problems.
To me, that sounds like OVP, however, OVP has been tested and cleared, my 190E used to run like that when my OVP was damaged, it would do it all the time, at all temps.
Also,
Can someone tell me where exactly or post a picture of this guy:
