Whenever possible, I prefer to do my own work on the car, but I'm no fool: If it's more than I feel capable of safely and successfully handling myself, I have no problem calling in an expert. Nonetheless, hope springs eternal that I'll get under there and find that it's an obvious fix (i.e. a loose/missing hex screw.)

My primary reason for posting here is to obtain some help in accurately diagnosing the problem first. Don't worry, if I (we) can't readily pinpoint and solve the problem, it's back to the indy.

Either way, I'll follow-up (as usual) with the resolution--to possibly assist others in the future with the same symptoms...

__________________
Eric

1991 560SEL-Euro (214,000 miles)
1989 420SEL (Retired from daily use at 325,000 miles; Use as donor vehicle)