William it is my experience that the front seal just starts leaking after alot of miles. I think I would leave the bearings alone although I will admit I am not exactly sure which bearing you are referring to. I would drop the tranny with the bowden cable/red vacuum tube attached. You may want to go ahead and change the engine rear main seal if it is a single piece unit (versus the one like in the 617.xxx engines.
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Jim
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