Just aquired a Emco Maximat super 11. I cannot get the lathe to run in 300, 600, 1100, or 2200 rpm. The right hand shifter does move to its full throw but the gear to engage into its mate only just touches. (these two gears slide together on the spindle shaft) This lathe came from a school. Is it possible that the gears on the spindle were moved in order to "lock out" higher speeds? Please advise. I know that my description is not exact. I might be able to post photos if I can figure out how. Please offer any advise. this is a nice machine. No wear on the ways and no backlash on dials.