So update on my speedo issue - after pulling it and greasing it, it worked but once I got to about 50 MPH, it went bonkers again. So, instead of pulling it and greasing again, I opted for a new one.
When I put it in today, and took it for a ride - no bueno. :-(... Brought it back and pulled cable off speedo and checked for fit and it seemed ok -- Test ride number two: Still No Bueno.
I pulled the cable at the transmission to make sure it would spin the speedometer and it did - so I decided to reconnect - but this time, I disconnected at the speedometer and reconnected at the transmission first to make sure it was set properly - after then connecting to the speedometer, and took it for a 3rd Test ride - It worked perfectly!
Here's what I've learned - When you replace the cable - connect to the transmission first to make sure it gets seated properly - then connect the speedometer side.
Many of you know this already - but thought I'd share it for the rest of the 'neophytes' here.
Thanks for everyones help!