I was doing some sleuthing today to diagnose some acceleration issues and I have exactly the same problem -- the bar does not reach the kickdown switch. The switch itself seems to actuate or click manually just fine but the bar is short of the switch when fully depressed. If anyone knows of an adjustment it seems I need one as well.

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1987 300TD 231,000
#22, afterglow, plastic fan, euro lights, alternator upgrade, cluster housing update