Woot! woot! SUCCESS! I finally got the detent button to move! Yes! *doing the dance of joy! NOW, I can move forward with this machine. It's taken so long now, that I forgot what I am even doing with this machine. I'm sure I need to work the button more to get it really loosened up. I thought it was fully poked out, but once I got it to push in, I found out it was not fully poked out either.
I will still need to change that camstack gear. I'm a little nervous about that.