I remember when you put in the additional heat exchanger a couple of years ago. It does seem like a perplexing problem.

Just arrived on the boat on the Rio Dulce. It always amazes me how dirty a boat can get when it rains all day every day. You would think it would keep it clean. The interior was perfect. My companionway air conditioner worked out perfectly keeping the boat dry, without mildew and a good temperature.

The outside was a different matter.