Speedometer jumping, and inaccurate

Thanks for starting this thread for me and my Wagon!

So there will be trany fluid where the cable attaches on a 4 speed?
And this twitchiness can hurt the speedo head? Would I be better off detaching it til I have time to sort this out?

I am hoping to spend as much of the holiday break as I can working on the car. I have the usual issues to address. Fuel gauge, light switch and seat belts.

Congrats on moving to SF, I lived in the Bay Area for 10 years or so and I still miss it.