Hello everybody,i have in my cossie 4pistons WMS calipers with bells and 310mm rotors,and i have inside the car switch for ABS on - off ,when i select the switch off ABS, then the car stops with rear calipers i mean the pressure is not enought for front calipers i think,
with result the car is not braking well,and the rear brake is too strong ,so the rear part it turns, so what can i do for that?anyone knows? any help appreciated.

* i have made gasify in whole brake lines a lot of times!!

Thanks a lot.