[Closed] Bike part Sherlocks - I need your help

So I've got a lovely set of DT Swiss 1750s in the shed, with a 15mm maxle on my Rockshox Revs. So I need the conversion kit from 20mm to 15mm on the 240 hubs. But I can't find them anywhere.

All the usual suspects are out - CRC, Wiggle etc, and it's too specialist a part for any of my local LBS to stock. Calls to the old and current UK distributors (Madison and then Hotlines) drew a blank as well.

Where outside the UK would you look? I'm off to Coed Y Brenin a week tomorrow and I'm running out of time...

Thanks