Hey no drama's - every day is a school day so always handy to learn something else if it is the case
I've got 2 rear hubs for my 200WR both with the code 3BN01, however 1 has 2 bearings in it and the other has 3 bearings in it. Whilst I dont know I suspect that one is from a DT125R and the other is a genuine 200WR hub.