Rear main seal replacement

[EEYORE5182 at aol.com]

I was thinking of replacing the rear main seal since i have access to  it.
Before i did it though, i wanted to ask of the difficulty.  What  im affraid of
is that it would be like an axle seal that if i didnt put it in  right, it
would leak.  Is that the same type of deal here?  If so, i  almost dont want to
risk it.

Alex
'93  NX
'92 G20 about to have '92 NX tranny