Crankshaft Alignment to Block

[harleytoprock]

I can understand how that shimming the top ears will move the 12:00 position to match the 3:00 and 9:00 position. But if at 3:00 it's higher by .010" than the 9:00 position, I don't see how using dis-similar shims under each ear could make a change since the housing is bolted to the block at 3:00 and 9:00. It would seem putting a shim at the 9:00 position would have the greatest effect.