Problem(s) Encountered:

There was a problem with focus.

Since the first image observed with focus value of 837 was out of focus we tried to change the focus value.

Focus value on the TCS GUI changed appropriately when we send new foucs.  However the focus of image didn''t change at all even we changed

the focus value from 800 to 900.

Solutions:

Found that the coupler that connects the focus motor to the drive assembly had sheared.  Had one spare left and installed it.  I also added a small amount of grease to the worm gear on the drive.  Drove from nominal to home a number of times and all seems to be functioning correctly.  I suspect the high humidity and cold possibly had something to do with the failure of the component.

Spares have been procured.