Is there some kind of adjustment for a 1982 transmission, maybe internally?

When at a stop light, in Drive the transmission still tries to move the car forward too much. It seems like this is hard on the tranny and could result in big trouble.

The engine idles at 800 rpm, so that seems correct.

Many times I put the car in neutral to ease the pressure, especially if it seems like its going to be a long red light.

The 82 trans is on a 83 300DT engine, in an 84 300SD.

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1st MBz: 1982 300SD
2nd MBz: 1987 300SDL
3rd MBz: 1995 S420
4th MBz: 1987 190DT
5th MBz: 1984 300SD w/1983 300DT engine
6th MBz: 1999 C230k I'm 3rd owner, got it w/57,235 miles.
and manages Mom's 2007 R320 CDI