I have done these bushings before. I believe the one by the trans is very hard to get to because of limited space.
If I recall correctly, using a long knife (after removing the retaining clip) I cut off/out the old one. Installing the new one calls on one's patience and creativity. The bushing must be inserted/pressed into the shift arm on the side of the transmission. If there were not 2" to work with, it would be easy. Many people lube the bushing first and leverage against something to try pushing it into its hole. Sometimes this works, sometimes not.
I finally cut (yes I know) the bushing once, so that the pieces overlap each other and it then can be mashed/push into the trans lever. I then expanded it. Once done I got the pin and jammed it in. Replaced the clip. I rather not tell you how long it took me to do this.
So far so good: No rattles, works well and feels solid.
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)