I also have the Harbor Freight balancer. Take the bearings out, peel out the bearing shields and toss 'em. Then flush out the grease and lube with very light oil. You'll be able to balance to a 1/4 ounce or less no problem.
2004 BMW R1100S / 2003 Ducati M800Sie / 1986 R80 G/S / 1993 Suzuki RMX250 / 1981 BMW R100RS (Sold
) / 1977 Kawasaki KE100 (1st Bike