hi guys, a quick question for you, sorry if it has been asked elsewhere, i looked but couldn't see it. i have changed the front brake pads on my 2003 c3 desire, i loosened the bleed nipple on each side before pushing the piston back in, re tightened the bleed nipple after replacing pads and callipers, now i cant feel any pressure on the brake pedal, if i drive slowly in 1st gear, when the brake pedal is fully depressed the car will stop, but as speed increased so does the time it takes to stop. have i missed something? before the pads were changed i only had to partially depress the brake in order to stop the car, any and all ideas advice would be gratefully received, thanks in advance.