the flex disc sounds fine, but I think there is a front and back to that flex disc. Make sure you get that right. I cant recall at this moment.

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63 220S W111
76 300D W115
2013 VW JSW TDI M6

previously-
73 280 SEL 4.5
86 300E 5 speed
2010 VW Jetta TDI M6