Follow up, 1985 245 with tranny fluid leaking after overfill, then
very minor leak afterwards.

I pulled off the speedo gear from the rear of the tranny and found a
partially broken sprocket, a bad main O-ring and deteriorated thread
tape (if any).

I have a photo, I hope this will be the source of my leak.

Question:
At the base of the sprocket - does an o-ring go there? I see where
there is 1 main o-ring around the middle of the sensor body, 1 rubber
cap that fits into the tube going to the speedo?  Did I miss any? How
many total?

THanks!

http://www.flickr.com/photo_zoom.gne?id=432465148&size=o

Jamie