2005 Edge...Had an issue with touchy brakes. They would lock up at the slightest pressure and would appear to drag somewhat. Turns out the driver side rear brake was not working. It was cold to the touch as opposed to very hot on the passenger side. So I bled the system and magically the brakes were working again as they should...until a few days later when it started acting up again. Once again, driver side drum was cold and passenger side was hot and they were locking up when braking. This time I changed the wheel cylinder just last night and took it out for a test drive and it seemed fine again. I checked the drums and both were equally as warm. Well, this morning I noticed it started dragging again and when I got to work I checked the drums and yet again, driver side rear was cold and passenger side was hot. What else could be the problem other than a wheel cylinder? Im not getting an ABS light and the light is working as it fires up when first started. I'm stumped here. Any ideas?