Hydraulic brakes with air. Brake shoes are stuck on drums at rear. Yes, along the drive shaft. There are 2 cyclinders either side of the rear drive shaft where the pipes enter. two brake lines run from both cyclinders to both r/l rear drum brakes. Listening to the air brake, beneath the drivers brake pedal, their is a cyclinder with a rubber gasket on the bottom. pushing the brake pedal down, air can be heard escaping from the rubber gasket below the brake pedal. When brake pedal is pushed down, the brake & b/fluid lights appear on the dash. the air tanks contained moisture due to the humidity. perhapsthis may a causing problem. ?