> Interesting! The 3 speed front bearing covers I have seen are
> machined slightly different than the 4 speed covers on the inside for the
> bearing outer ring. The three speeds can be machined to work correctly. Both
> the 3 speed and 4 speed 6 bolt covers have the same OD it is just in the
> ring grooves machined on the inside and as I recall a
> slightlydifferentposition of the seal.
This was more than 20 years ago, so I don't recall the details
too well, but I don't remember this being a problem. My gearbox is a
T-10, which may be different in this regard to a toploader. So far
no leaking seal (at least not at the front) or grinding bearings.