YAMAHA UPRIGHT FLANGE TOLERANCE. Just to explain, Yamaha "pre-travavels" their vert. flanges. Picture a large container somewhere at the top with flanges (before they are bushed). An electronic device scans them and sorts them in such a way that they come out in three containers at the bottom: Those leaning to the right - leaning to the left - and straight. As a result of it, since "one of a kind" is used in each action, they need little traveling. Clever? I still have the slide of this "flange traveling machine" included in a slide show I used to give for Yamaha. Ernie Juhn RPT
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