Just wanted to pass on some information about a recent purchase.
I was able to order a replacement spindle in an R8 format for BusyBee tools part # CT129R8 to replace the current MT2 unit.
See the attached picture.
I haven't taken exact measurements but it appears I will loose about 1 inch in the Z height but I OK with getting all the R8 tooling possibilities.
Now for the help part. I misplaced my manual that has all the exploded diagrams. If someone can PM me if they can get me a copy of those pages it would be a big help.