I was gonna try to make the swingarm preload tool described at The Pig Pen. A friend at my local bike shop lent me a clutch tool he has for some Honda street bike clutches. It's like a double-ended 1/2" drive socket. The larger end fits the outer ring perfectly. The smaller end is almost too large (diam.) for the inner ring but since it's only torqued 5 lbs. it works. The #s engraved on the tool are KS #C 26x30 07716-0020203. He said they're $28.