Thanks for the ACE brush tip RichC, I got a set, used a bench grinder to get them to fit just right and soldered them in. It works like new now. $8! I'm working on a DIY article for the procedure.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine