You may also fine tune a c band actuator using Signal finder. The files for Signal finder recently changed. The files for Positioner setup have not been changed for months in TNAP 5.

I just fine - tuned back to back 89w, 91w, and 105w using Autofocus in Positioner setup. The debug log shows an error in Positioner setup, but nothing that should cause the spinner to activate. You usually only see the spinner when lots of resources are being used. Seems you have something running besides Positioner setup.