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That's an excellent suggestion. I'd begun thinking of what I could use to penetrate and dissolve, but not pose a danger to what might be attacked by something highly volatile . . . the plastic oil sight glass for instance. I'll give this a try tonight and give it a few days.Harry
SUCCESS! After a 3-day soak in fresh kerosene, daily runnings, and a wee bit of extra torque on the selector shaft, the reluctant cluster gear freed up and the gearbox is now running sweetly on all feeds.How VERY glad I am that I don't have to open up that gearbox.(Note to Self: Cut more threads!)