Huge thanks to , OptimisticMonkey, Danimus2000!!! Got it working on 4.20.2 … sooooo much better! I wish you guys prosperity and long, happy life. Please do continue to update these binaries for future versions!
The only thing on my wishlist if at all possible is that the knob navigation control stays focused on 3D viewport even when you click on other parts of UI like Outliner so that you dont have to click back onto 3D viewport to activate navigation.