Hey JB!
Do you still use the Dr. Feickert? I've been using the Geo Disc and found it a bit lacking as well. (Getting that pivot point lined up is tricky business!) I started looking into Dr. Feickert and came across your post here.
If you still have it, I'd love to take you up on the offer to borrow it! I'm in Highland Park.
Best Regards,
Jeremiah