if you still have fault on- you could check the following- where the pad retaining pin fits,there is a small stainless bit that clips into calliper, if you prise it out you will find it to be rusty where it pushes in to calliper thus making it stick on when brake released, clean with emery,put stainless bit back,refit pin and check.please reply if it cures it.
k, February 2009