I think I found the relevant section in the manual, but I can't extract the page and can only copy the text into this message and not the diagram. The pdf has security settings.
NOTE:
Although front and rear sashes must, as a rule, be
adjusted in the same manner, in some door installation,
the adjustment in a different manner may be
required. However, adjustment of one sash to the
maximum amount and the other to the minimum
amount is not permitted. Such adjustment may result
in application of excessive load to regulator.
11) After adjustments, tighten the nuts.
12) After adjustment to glass, close the door. If
there is a gap between outer lip of gusset and glass
surface, adjust the gap with adjusting nut (A) in lower
fitting part of the gusset to prevent generation of
wind noise.
13) During adjustments, loosen the other three
clamping screws.
14) After adjustment, tighten the bolts and nuts.