I've had my 82 240 D for two years and have had the satisfaction of fixing dozens of things like the starter, clutch slave master, A/C compressor, brakes, leaky power steering pump, gear box, panel lights, plus cosmetic things, etc.
Anyway, since I've owned the car the shifter has tended to easily slip into reverse when I want it to go into first. I now know how to avoid this, but it just can't be right. It seems like it was designed so as to lift the shifter when going into reverse, but that restriction seems to no longer be there, worn away. I've replaced all those rubber grommets on the transmission rods and that didn't make any difference. Is there something I can do?