W124 88 with auto Transmission

[bobkat]

Hi all,

few months ago I bought a 300e 88 with 112K miles. I changed the motor and transmission mounts and got rid of rough ideal. I believe transmision starts in 2nd gear and shifts up to 3rd and 4th OK however, it shifts down hard with a cliking noise from 3rd to 2nd as the car comes to stop. A same kind of cliking noise can be heard when the car is put to R. Another noticable issue is a humming noise when the trans is in P or N position. The noise would go away when it is put in any gear. I changed the trans filter and fluid right after I bought the car since it was last changed around 70K miles. Is there a way to adjust the rough shift from 3 to 2? How about the humming noise? Thaks very much for your help.