Has anyone heard from Yip?

@mijostyn , @randyk , How do you find the tolerances of the SmarTractor, particularly the rotating structure that enables selection of geometry? I've heard reports that there's some slack in it.

@wrm57 

Unless you brutalize the tool, tolerances remain german tight. I think once you settle on an alignment, I use Lofgren B DIN, you never change the tool. As long as you are careful not to scratch the surface there is no reason the tool should not last forever. Always return it to it's box. 

The two tools I use the most are the SmarTractor and the WallySkater

I forgot the third tool, the Ortofon Tracking Force Gauge.