2016 THOR MOTOR COACH AXIS Visibilitywiper Problems

I HAVE COMPLIED WITH SAFETY RECALL 15V-530, SAFETY ADVISORY RC000103. THE PROBLEM REMAINS, NO CHANGE, I CANNOT DEFROST THE WINDSHIELD. THE ONLY SIGNIFICANT AIR FLOW IS TO THE FLOOR REGARDLESS OF THE AIR FLOW CONTROL SETTING. AS STATED IN THE RECALL, THE VEHICLE WAS EQUIPPED WITH A DEFECTIVE AIR FLOW CONTROL UNIT WHICH DOES NOT PERMIT AIR FLOW TO THE WINDSHIELD DEFROSTER VENTS. TMC'S "FIX" IS TO PREVENT THE SPIKE WHICH DISABLES THE DEFECTIVE CONTROL UNIT, HOWEVER, THE DEFECTIVE UNIT REMAINS. IN MY CASE, THE UNIT IS ALREADY LOCKED AND I CANNOT DEFROST THE WINDSHIELD. THE RECALL SHOULD INCLUDE REPLACING THE DEFECTIVE PART. THE CURRENT REMEDY HAS NO IMPACT ON VEHICLES WHOSE DEFECTIVE AIR FLOW UNIT IS ALREADY LOCKED. THE CURRENT REMEDY LEAVES THE DEFECTIVE UNIT IN THE VEHICLE AND IN MY CASE DOES NOT REMEDY THE SITUATION BY WHICH THE RECALL WAS ISSUED FOR.