I was driving on the freeway today and when I came to a stop the rear brakes were smoking. For some reason the fluid pressure is not releasing. It's stock 68 rear drums. The fronts were switched over to power disk with a SSBC conversion kit about 4 years ago. Can anyone tell me the sequence of thing to check. I've heard there is a rubber hose right before it splits to the two lines at the rear and this may be the problem if old. Help! I just got the 700R4 put in and can't do any cruising like this!!!