Probably not a bad idea to put in those Iron barrels Spindle ;)s ...
On the UCE spindles I have seen, there is up to .011" out of round on the outer sleeves on those spindles.... egg shaped. Put a dial gauge on it and rotate it , from one side to the other. This will also effect your valve timing to some degree, depending on how the gear lash is set. When you adjust the cams, they are rotating around each other a bit. This effects when the valves open and close, and it will effect the lobe separation angle . One can drive themselves a little crazy when degree-ing in cams.... you get a different result , with different adjustments. You may have an LSA of 111, then maybe 109, then maybe 114 and etc.