Originally Posted by
grumpus
Post #9 above mentions the difficulty he had trying to measure it accurately.
And it might be unnecessary since the bearing itself shows that the cup distorts into an oval when pressed in. It is hard to imagine another cause - if the HT is already properly prepped. If not, it could be that the HT hasn't been reamed and is undersized, and the alloy cups are ovalizing because they are being squeezed into too small a space.