We've got a Hunter H111 alignment rack. I teach high school auto shop. I inerited this and the old teacher came by one day and gave me a 15 minute how to. I can get it to work, but don't know a lot of the tricks for it. How to calibrate it? What about different wheel widths? We were using it on our mustang and we have wider rear wheels and it gave us toe readings that were obviously wrong. We ened up using a tape measure for toe. I'll see if Hunter can send us an original manual for it. I searched online and could not find anything. We've got a G111 as well, but he told me is doesn't work. Might be good for parts...