Thank you for the video. Appreciate the effort. My gears are the same but the collar is a different vintage.I don’t think this will help you, but I made a little video of the collar on mine. I’m guessing it’s not the same as yours. Sorry I wasn’t any help.
My 10F makes the same noise. Its the bevel gear in the reversing box on mine. Its a little chewed up from use and a little too much play.I don’t think this will help you, but I made a little video of the collar on mine. I’m guessing it’s not the same as yours. Sorry I wasn’t any help.