94 E320 Tranny problem ?? Help....
 

The car has 127,000 miles. New flex discs were put in less than a month ago by the dealership. I am currently experiencing 2 issues:

1. Hear loud clunking noise when come to stop only if the car's driven in 'D' mode. When the car is driven in '3rd gear selection' mode, it does not clunk at all.

2. Kickdown switch is no longer working. When pressed down, nothing happens. It used down**** perfectly fine.....wonder if this is related to #1 issue.

Your input/help to resolve the above matters would be greatly appreciated !!! :)

P.S how difficult is it to replace the rear differential mount bushings ?...are they pressed on ?....couldn't find diy.