Water leaking from the underside center of the tub. Only on the rinse cycle.

I want to mention only the difficult parts.
The removal of the retaining ring/nut (which is under the agitator) . After 10 + years, it was very hard to move this part and it was eventually broke it to remove it. WD40 was used but not effective (to much calicum build up). You must turn the cone shaped piece (located under the inner tub) clock wise to get it to remove. A spanner wrench was not used to remove this. I used a punch and a tack hammer. We could not remove the old tub bearing (closest to the shaft), so we just cleaned it up with emory cloth and used the new tub seal/outer bearing. Spins great but have not been able to check the water leakage problem yet.
Caution: there are two dark colored ring (very thin) that go back on top of the rubber collar. These must be reused. These are hard to see. I pushed the old tub seal/bearing out with the end of a 2x4 (very slowly and carefully). I put the tub up on two of the 2x4's, for clearance off of the floor and used the third to knock the old bearing out. Old machine are very messy.