I'm rewheeling and having trouble finding suitable wheels

[zoablive]

Hi,
I've just started rewheeling my 009 carriages. The first 3 went fine and then I ran out of wheels. I can get wheels for my next 5 carriages. Now I strike problems. Some of my carriages were quite corroded around the axle box and I will need to buy some top hats to fix this problem (Worsley Works I think). My wheels how ever seem to come in 3 different axle lengths,
1 is 14.52 mm, 1 is 14.87mm and the other is 15.00mm. Now I need to source these wheels, but I find most suppliers on the web don't list axle length or am I looking in the wrong spot.
I'd like 6mm diameter wheels.

Any help appreciated

Thanks in advance

John