I have seen the rubber lines go bad in the past. I had a car where one of the front brakes wouldn't release. It turned out to be a bad rubber line. Fluid would go into the caliper but couldn't get back out. The rubber must have been coming apart inside the line, when I got it off I could blow air through it only in one direction.
-=>Lee<=- Due to budget constraints the "light at the end of the tunnel" has been turned off!
