Hi,
Finally managed to get all spacers off so the hub now has a 133-134mm spacing - but STILL I can't get the wheel in to the dropouts! I feel I'm very close now, as I can get one side of the axle in and the other just touching the dropout.
As for changing cones, unfortunately this a cartridge hub so I think the cones are brand specific. Don't think I could put regular locknuts on either - I think they use a different thread pitch. For the record, the hub I have is a Surly fixed/free flip-flop hub, first on this page:
http://www.charliethebikemonger.com/.../procart21.htm
I also took some pics of the rear triange, as attached.
BTW, I really like the idea of that Dura-Ace hub - doubt you'll see anything like that on these gimmicky flip-flop hubs!