Not intending to hijack, hopefully this could also help Gav and others as a search came up a bit short and didnt see the need for 2 1k disk brake threads!
Ive got Magna discs front and Bluebird rear on the wagon. The handbrake hardly works even after much adjusting and both front and back tend to drag and make a hell of a racket when cold. Tomoz and others on here have mentioned someting about a valve that needs removing/modifying, is it the proportioning valve? Dunno much about brakes and Im taking it back into the mechanics for the 3rd time about this problem, any info you could give me to tell him would be appreciated!