Once the motor scale is set to your correct latitude of 52.5, that should not be changed at all; it should be left well alone as such.
The dish scale can be set to 22.5 as a start or, ignoring the scale, the dish should start angled just slightly above level. When searching for Thor you can alter the dish scale or dish tilting angle as appropriate; but the motor latitude/elevation setting should be left alone, once set correctly. |