hi i have a 1989 mercedes 190e and it will not go into over drive. i know that i have to reset the shift linkage to the correct spot because it is loose. my question is how do i do that? i had it up on a stand and i went under the car but i cant get to the linkage there is no space for me to put my fingers in there to tighten it. is there another way i can get to it without having to move the transmition?