#5 HOIST REPORTED THE BRAKES NOT SETTING EVERY TIME. SHIFT ELECTRICIAN REPORTED THAT THE BRAKE ACCUMULATOR WAS NOT READING THE PRIMARY SWITCH WHEN THE BRAKES WERE RELEASED. WHEN CHECKING AND W ORKING ON BRAKE LINKAGE, A PENCIL WAS FOUND UNDERNEATH THE BRAKE LINKAGE IN THE CONTROL CONSOLE.AFTER THE PENCIL WAS REMOVED, THE LINKAGE ADJUSTED AND BRAKE TESTED.