904 tailshaft mystery leak.

That Front Yoke could be welded on there and leaking through pin holes in the welding.

Swap on a different front Yoke and see if it quits leaking. Or clean and seal the outside center of the slip tube at the yoke slip tube area with RTV gasket maker.

There probably is a centering point there too for turning on a lathe that may have been drilled too deep causing the leak.

Have to clean up that area on the yoke and have a look. Can even test the splined slip tube area with some air pressure and see if it leaks out by the u-joint.

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