Well, I got the seal listed (the picture is familiar). I looked at both engines and there was no where to fit it on the outside. So, I pulled one of the engines apart thinking it was fitted internally... waste of time.

I'd be interested to know the fix, but given my change to a B&S engine mower just recently, I don't see all the fuss and rep that goes for Hondas. A bit like the Toyota thing with cars - all reputation, little substance. And teh competition have at least caught up anyhow.