Update. After taking down the unit, and taking a good look, the first thing I caught was a crack on the top of the helmet support for the wind spoons. It looks like whoever put it together pressed it down too tight. Apparently the unit freed itself by cracking the helmet. I put some rubber cement over the cracks to prevent rain from leaking in. The bearing had no play I guess because the wind spoons were running at a slight angle and rubbing against the plastic covering for the bearing. As temps got cold, the problem worsened. I did not attempt to take the wind spoons off, as I felt the whole thing may break. I did open the sensor and oil from the bottom, and oiled from the screw in the center of the bearing. We have no wind hardly at all today, but the unit is running nicely. I'll update on a windy day.
