Seems to be a clone of the Premium X motor I have.
The manual is really confusing at best and the chart/table at the end even more. Had the same problem some weeks ago when I installed mine. Motor elevation (the black metal thingy) should be adjusted according to your real latitude (52) as others already stated. Dish declination can be calculated with the chart but my experience was to totally ignore that one (as the scale on my dish is more or less rubbish anyway) and adjust it so the signal is peaking on one or more - not so strong - satellite(s). Regarding true south
@Terryl already said what needs to be done
Fine tuning it later for all positions is the real problem anyway.