Following the recommendation in an earlier reply I removed the front right drum. Found that the new shoes were showing wear marks, in the middle and on the ends of the shoes. The marks were not uneven side to side. I then had my wife press the brake pedal to check the travel of the pistons in the wheel cylinders. There was not a lot of travel....more in the top wheel cylinder ( front most shoe).....the bottom cylinder did not move until I put pressure on the front shoe to keep it from moving ( it still moved but had resistance from my hand). Neither the top or bottom cylinder moved alot. These are new wheel cylinders. Should there be a lot of piston travel without the drum in place? I've pretty well described the symptoms. What is wrong and what needs to be fixed so that the brakes work well enough to skid the tires if I needed to.