I picked up a 96 stumpy recently which was fully original except the wheels - they had been replaced with silver Mavic XM317 and Deore T610 hubs (also in silver). I believe both are available in black - I'm actually very happy with the wheels and seem like a good retrobike replacement option.
With groovyblueshed's experience it might have just been the wheel builder. There is an excellent one near me (in Cranleigh) I can recommend - works out of Beyond Mountain Bikes. He would happily take some pre purchased rims and hubs and build the wheels. Let me know if you need some more info...