Some disagreement between powering diagrams and measured polarities.

On the drawings  RQT5.L7 is turned, positive to B terminal. This should mean +ve current - focusing. However, Gianluigi's measurements show the opposite and that QT5.L7 follows Q5.L7. Polarity to be set to -1.

RQT5.R7 not turned. Positive to A. (+1). OK
RQT4.L7 turned. Positive to A - not in agreement. Polarity to  +1.
RQT4.R7 is not turned. Positive to B. (-1). OK


RQT5.L3  turned. Positive to A. (-1) OK
RQT5.R3  not turned. Positive to A (+1) OK
RQT4.L3  turned. Positive to B. (+1) OK
RQT4.R3 - not turned. Positive to A - not in agreement - polarity to -1