I have a 2003 Country Coach with the original Dometic NDR 1492 side-by-side refrigerator/freezer. Your great technical pages have convinced me that I have a cooling unit failure (heating from gas or electric is great, it's level, and there's good ventilation, but the temp inside the box gets warmer and warmer, way way above Florida ambient temperatures!). Your list of cooling units that can be refurbished doesn't include the NDR 1492. What are my options?