Hi John ---To re-cap --You said that-----"I have noticed today that the brake lights are on permanently, and if i hook my foot under the brake pedal and pull it up, not only do the brake lights go out but the brakes release",
Then again you said----The pedal is very hard to pull up and it only comes up a couple of millimeters, it is also very hard to push down, feels almost solid, all 4 brakes are sticking on until i pull the pedal up, then the brake lights go out and the brakes come off,
Well I still think its the pedal that's the Problem when you fitted the new master cyl did the pedal move free and easy on its full travel.???
Saying all that the other thing is is there any free movement when you apply the pedal before the brakes work it dos'nt sound as though there is --if you disconnect the rod thats from pedal to master cyl are the brakes on or off???
Just trying to help.
Frank