I had to replace the plastic slider on my car. I would recommend using a generic clevis pin to replace the rivet. Grind off the existing rivet, drill the hole larger and install the clevis pin along with a cotter pin. It's much easier than taking out the regulator and hammering in a new official MB rivet. The clevis pin is longer than you need and has many holes in the shaft. Cut it to length with a hacksaw. Replace the plastic slider as well and grease the channel.

I can post some pics in the morning if you'd like.

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.