The leak from the inner seal has returned after five years, ~20000 miles/ 32.250km.
I've ordered the seals and the O-ring from MGCycle. Now, I wish I could remember how Andy got it all apart (and together again). But, that was five years ago . . . I don't remember any special bearing puller.
I've been tempted to try and "flush" it out with a series of gearoil changes, but all that proved to be a waste of time when this happened before. I do wonder if some swarf was left over in the case from the bad work, that was done in Kansas, may have found its way into the seal.
*nuts*