3" grinding wheels

[Vet88 673]

We use Lapport 3" grinding wheels (31A, A100, K) but for some unknown reason they have become really hard to source out of the UK and I have had no luck chasing them out of Singapore (and the manufacturer keeps referring us to the UK distributor so we go around in circles). Does anyone know of a supplier in NA? Or a recommendation for a high end 3" wheel? We have used ones from Mexico and the Blademaster 3" grinding and dressing wheel but they aren't, at least in our opinion, anywhere near as good as the Lapport. Cost isn't an issue.