OK, got it. I had looked under "Transmission" but somehow missed it. Too many gears in that image, I guess.

For future reference, the old part number is 90215-30233 but has been superseded by 90215-26241-00. It has only two locking tabs so I recommend replacing it. Unlike some other bikes I've had, there are no "unbent" parts of the washer to utilize.

Most online stores seem to charge quite high delivery rates for a single washer that fits into an envelope, so I guess visiting an actual store is both quicker and cheaper.

Bank holiday at Goodwood. Shame it’s not the Festival of Speed or the Revival weekends, that would have been epic.

Unless I had free tickets I don't think I would go - I've heard horror stories regarding arriving, parking and exiting the site.

I'll have the bottles of oil if still available

I've sent you a PM with my details.

... and withstood ethanol mixed into gasoline better than the old originals.

This is a good point. I don't know if it has been addressed before in another topic.
Doing a quick google search it seems Viton o'rings are more resistant to ethanol than NBR, so that's what I'll look for.

I'll have the bottles of oil if still available