Its in Japanese but the photos are enough info from Team Azarashi web site.
Look for the posting on 13/05/10 and click on B-Max MR 2 link.
http://www.team-azarashi.com/framepage3.html
I did ask Avid if they would make a B-Max 2 conversion kit with the correct spacers and kyosho top shaft but they didnt seem keen.