After waiting almost 2 weeks (3 kids keeps you busy) I decided to check the busybee website for the manual and it's now there.
I'm glad I waited because I was thinking I needed to take apart the untire head. Less than 10 min job to remove.
Here are some pics of the R8 & MT2 spindles side by side.
Something new compared to the old unit is a threaded hole that can lock the spindle.(Cap screw fits perfect) This will come in handy for re-installing the drawbar cover on the top becuase there are no wrench flats anymore.
Speaking or drawbars that's my only problem, you will need a new one if you get this spindle. I might make my own if they are not in-stock or a reasonable $.