The peeling stuff is most likely just paint. All of these balancers are painted black, after a while the black paint flakes off the rubber ring due to normal vibrations.
The run-out or wobble is another matter. The MB spec for Permissible difference at vibration dampener is as follows.
112 V-6, 113.94_ , 113.96_ , and 113.98_ V-8's.
radial runout .5mm axial runout .3mm
113.992 V-8
radial runout .4mm axial runout .2mm
113.990, and 113.991 V-8's
radial runout .4mm axial runout .4mm

Dr.D

__________________
Dr.Diesel -
Shop Foreman
Master Guild Mercedes-Benz Technician.

Think the dealer is expensive? Do you know how much it costs to train a dealer tech? Or buy the required MB special tools to have on hand?