I've recently bought a new wheel with hub from tredz, I looked at the specs of my old wheel and they are same spacing etc but now I've just fitted it I've noticed a slight difference. My original hub has a thicker end than my new one. So although it fits it doesn't sit on the fork like the other.
Thanks just figured out it's a torq end cap £25 for my new hub. Mate of mine says it's fine to run it as is just a bit of a faff when putting the wheel back on so I'll leave it for now.