I have a 1983 series 3 what i have just bought, i thought i would change the brakes as they were poor so i ordered a brake overhaul kit from paddocks so new shoes, springs, adjusters, and cylinders got it all fitted saturday afternoon come to bleed them up with my easybleed kit as soon as i popped the pipe on my tyre the both back cylinders p****d fluid out from inside the drums, took the drums off to find both the cylinders leaking, have i done something wrong or are these faulty cylinders as im taking them back tomorow and dont want to look a fool