James, my only suggestion is (for tonight anyway) contact Steve at Freedom Kilts or any of the fine kiltmaker members here. I'm sure you'll find them accomdating and you'll be satified with your next kilt.
I've made my own as Alan H suggests, live 40 minutes from Sportkilt, and The Tartan Patch last time I checked is about 14 miles away(they're pricey but my Taylor tank is solid as Sears).
Tartan Patch is the only one that had me come in for measuring and such, Steve's guidelines at FK that are easy to follow and the fit is great - he's many miles north and across one international border (sort-of) away.
Good luck with your hunt.

CT - I think my point was they don't have to be close by but I may have missed it ...