hrm, let me look at the various adapters I've ordered in my collection at home, I might have these ones.Part number for the SunRingle 15mm axle kit is ED2FCAP15, around 25 euros from a few online retailers. If I can line up this potential buyer then I'll pull the trigger on the adaptors and your forks Moorey.
Ok, I wasn't sure what the tolerance was on a 20mm axle.... I've actually got one at home now so I'll check.Interestingly the ID of my bearings is ~19.9mm and axle ~19.3mm, I reckon that they'd all be able to fit a 20mm with the right adaptors.