For sprockets check with
http://www.shop.pbisprockets.com/med...Catalog(2).pdf
They list sprockets for the CM400E. I've had luck with calling them with something that wasn't shown and getting them to check their cross reference to see if there is something that will fit but isn't cataloged that way.
If they don't have a countershaft sprocket look in the online parts fiche and find your model and take the sprocket part number and put it into the "where does this fit" search and you may find a different model that PBI does catalog.
cheers,
Michael