I have the 2014 Explorer Limited and my blend door actuator has failed us for the third time in 4 years. I am not afraid to maintain my own vehicles and have replaced the part each time. My question would be is could it possibly be the air box that is stuck causing the actuator to grind away the gears in itself? I'm getting tired of replacing the same part and living in MN, the wife would like heat instead of AC in the winter months. Any and all answers/possibilities would be great! Thanks!