Try a vacuum cleaner shop. I think that is what the brushes I used were intended for.

You must have some hardware stores up there with the aisles of sliding doors of odd nuts, bolts, and odd parts.

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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