I checked the nose gear preload and found it took 9 .lbs at the axle to swing the wheel. I backed the nut off 30 degrees and it measured 4.5 .lbs which is what the POH specifies.
Spinning the nose wheel, the wheel bearing seal was rotating with the wheel indicating it's preload is inadequate. It had been checked before first flight. The axle nut is tight so will be necessary to shave off a few thousandths on the inside surface of one or both of the spacers. Seems like maybe Loctite 680 (for assembly of circular components) applied to the spacer/bearing contact would be a good solution here too.
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