If you got a girl to drive a Mercedes 83 240D STICK-shift and not say "eww it's old and it stinks and sometimes smokes!" then you know you hit the jack pot and she's a keeper! but question, if she has knee problems what difference would it be switching from a 83 240D to an 84 300D? Just curious! Also, the vacuum modulator control how HARD it shifts. If they are smooth I'd think it's something else. The Bowden Cable controls how late it shifts. That's more where I'd look!

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k