The inner race has to go in last. Think about it as if they were tapered roller bearings. The outer race goes in with the larger diameter of the taper facing out. Your problem may be that the ball cage was inserted backward and it rubbed on the inner race. Your pic #2 above shows the races in the correct orientation, with the outer race going into the hub from left to right. I can't tell from that pic if the ball cage is in correctly though. In your pic #1, the ball cage larger diameter is to the left, but should go in with the small diameter first.
