Pictures, pictures, pictures. Only found one bearing on the idler shaft. Be sure to use something, washer or clamps to prevent the idler shaft from exiting the headstock. Check the set screw in the eccentric bushing. If it has a point, then this point should fit in a center groove on the idler shaft bearing. Just do not over tighten. The idler shaft bearing will make a clicking noise if too tight. I move the eccentric bushing within the headstock casing to get the upper belt riding straight. I have been using a knurl grip cup set screw in the eccentric bushing. Sometimes I have to grind just a little off the set screw head to clear the headstock casing. This allow me to position the idler shaft bearing at different locations within the eccentric bushing and keep the eccentric bushing againest the washer in the "B" & "C" headstocks.
Bill Mayo [url]firstname.lastname@example.org[/url]
Shopsmith owner since 73. Sell, repair and rebuild Shopsmith, Total Shop & Wood Master headstocks, SPTs, attachments, accessories and parts. US Navy 1955-1975 (FTCS/E-8)