We had an AC unit installed on our new 310. The compressor is in the port cockpit locker and the condensation pan is always full of water. The dealer has had the AC guy working on it. The latest is that he shimmed the rear of the pan to move the water to the front drain and added a larger drain line. It didn't help. All that did was make the water deeper at the front of the pan. Has anyone had a similar problem? What is the cause and the fix? Thanks.