Final update: After removing all the paint from the Littens pulley with 36 grit sandpaper and using a 572 gates green belt all was good.
The 2 Bando belts slipped badly. One came with the 2.85 kit the other was a 1/2 inch shorter. There is a good reason a green belt is used on the Redeyes!
The Bando belts appear to soft to grip the pulley.in this application.