My 1991 GE (I believe Camco?) refrigerator, model # TBC19ZPJ, continues to have water collect at the bottom, just beneath the crispers. It eventually spills onto the floor if not sponged regularly. The water seems to be coming from the internal temperature/setting controls. All else works well with the fridge, temperature is cool, freezer cold and no other moisture build-up. Any suggestions are greatly appreciated.