New brakes, soft pedal, distribution blocks ?

If the rear calipers are equiped with an internal emergency brake (screw) behind the Piston, the emergency lever may need to be activated several times to get the pads/pistons into contact with the disc.
Cass from Dr Diff sent me this link trying to help me get my pedal to feel right. It made a lot of sense and I just knew it would fix the issue but nothing changed. Maybe it’ll help some of you.

I think my new master may be defective.