ive recently bought a w reg audi a3 sport 1.8l and ive had to put a few things right to get it through the MOT and one of them was a binding brake, i have fixed this but i had to take the caliper to pieces and fix it. however now the brake is not binding but the braking system is not working, the pedal is travelling way too far and their way too weak, also if it helps the brake pedal is making a sqelching noise :/ not sure what it is, ive tried bleeding the brakes a couple times but the front bleed nipples are corodded so ive been bleeding the front ones from the pipe where it attaches to the caliper. can anyone give me some pointers?