Im just posting this incase it could help someone else....
Im slowly working the issues out of this machine. This issue was the Magic Screen would not move right or left when the buttons were pushed. So, following the writeup on https://bingo.cdyn.com/techno/howtheywork/screen_movement/ I started down the path for the LEFT button. I was getting continuity and voltage up until the Magic Screen Unit Disc. I took a look at that and WOW, crazy dirt on the rivets (pic below). So I jumped in head first and removed the finger disc to get to the rivets. I cleaned them up with alcohol and then a very thin coat of super lube, reassembled and then tested. Right and Left movement as it should and smooth as butter.
Thank You for that write-up!
Now onto cleaning up a few more stepper units.