Twingo brake: rear axle overbraked

Hi, everybody, I changed the front brake pads and discs at my Twingo EZ12/96 today. In the subsequent test drive and a few brave brakings I had to notice with horror that the brakes at the HA block before the ABS starts to regulate at the VA. I know that the ABS only works at the VA anyway, but I always thought that the braking effect at the HA is so weak that it can’t come to an overbrake. Everything else w were of the vehicle manufacturer also grossly negligent!! Has anyone ever had this problem with their Twingo, and is there possibly a “adjustment screw” through which you can adjust the braking force at the HA? Thank you for your help!