Hi Nealth I just spoken with the shop you bought your kit on eBay and he doesn't know which kit is that one you've bought!! So you have alink, photo so that I can show him... Also did you bought for the 16" wheel kit.. apperently he doesn't have for that wheel size...No .
Try a faster wound similar hub kit form YSBattery or Elifeshop.
Links in post 5 of the thread below
http://www.pedelecs.co.uk/forum/threads/yosepower-hub-kits.30061/
Look for 320rpm speed hub.