I have a question about tranny problem in '88 300E.

[Steve190E 2.3]

Sometimes when I shift into reverse, the car does not move right away, other times it is perfect. Also, the transmission does not always shift out of 2nd gear on time. Rpms get quite high in 2nd especially when cold. When I say second I mean the regular startup gear as MB's do not start in first unless floored. I have adjusted accelerator cable and the other cable that goes to the transmission. The transmission has a couple of leaks and I am going to be pulling it out to replace the seals and was wondering what else might be wrong?