WE PAY THE RETURN SHIPPING ONLY IF YOU ALLOWED US TO REPLACE YOUR ORDER AT LEAST ONE TIME BECAUSE THE PARTS WERE DEFECTIVE. If you received a replacement part and the boards did not change your issue - they are likely NOT defective (we would not pay the shipping in this case!) IF YOU DECLINED THE FREE WARRANTY REPLACEMENT PART FROM US, YOU ARE RESPONSIBLE FOR THE RETURN SHIPPING. Did you receive an original order and a separate replacement order from us for this specific part? If so, enter both order numbers here. *