Oops! not the top return roller. It's the bottom road wheel axles and the front idler axles (not the return roller axle) - I think it should be 1-1/4inch 14 tpi and SAE thread but I can't find a tap to match that pitch because the taps available are 12 tpi. Has anyone had this problem and know where I can get a 14 tpi tap SAE??
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