Thanks again Grumpy. I have read a few posts concerning the same issues, and had decided that in the short term t was worth adjusting the belt tensioner. I have an unfortunate habit of being a bit flip, hence "adjust" comes across as "kick the hell out of". Too many years in the Navy I guess. You have answered my question though, I was really wondering whether in the interest of a more complete overhaul it would be worth replacing the belts, using the current configuration as a template, before trying to figure out which way a broken one is supposed to go. I will just adjust fr the present and see what difference it makes.