Do the search for balancing stands on this site. You can build yourself a 'dead on rails' balancer for about $10. It works so good that it is scary. Original article can be found some years back in Motorcycle Consumer News under DYI Motorcycle Wheel Balancer. Visit http://board.mcnews.com/
and look at the article index till you find it. Annoys me no end that the info isn't on the 'free' section of the site.