loose bearing race - K/H disc hub

My only comment on this is that the problem with the bad hub may not have been a spun race. My first Dart lost a wheel bearing about a month after I bought it (mechanic who replaced them for the previous owner did not grease them...). New race on the inner was loose because the hub was cracked from the heat. I have one K-H hub here that the inner was loose going in. I never looked to see why, I just grabbed another that I had and used it. That hub is still around here somewhere...