If you don't use the parking brake that often, use it more. The p-brake is what adjusts the rear brake. You should lube up the rear brake adjuster if you live in the GREAT WHITE NORTH as salt will freeze it up.
kurt
If the rotors are not groved or warped, change the brake fluid. Brake fluid brakes down. I drained the whole brake system and used Valoline Syntech brake fluid. My 60 brake fluid in the hyd clutch system was so old and black that it failed to push the slave cylinder in. I put in new Syntech and...