Tony,
Thanks for your help, that did it. Regarding your problem about tension: BobG's post on this site has a link to a photo showing proper belt positioning in a TC470 at http://uk.f2.pg.briefcase.yahoo.com/bjgrain
Select My Documents and then tc470blt.jpg. Maybe yours is similar?
If you can't find it mail me joe_mccauleyAThotmail.com. Replace the obvious in that address.
Joe
Joe McC, September 2004