I have the same problem. I think I replied to another post of yours about the roof with this issue. The dealer has tried to fix mine but it did it again this weekend so I will take it back again. Quick fix is take the screen out and it will stop leaking. It actually is creating to much suction and pulling the condensation back into the return side of the unit. It is worse when raining because it pulls the rain water in also. My rear air condition gave me problems this weekend also. It was only in the low 80s and cloudy most of the weekend and it never got under 80 degrees in the main living areas until night time and i got up in the morning and found a puddle on the floor under the unit. Climbed on the roof and pulled the cover off and it was frozen. Will have to get that one fixed as well.
2000 F250 CC 4x4 7.3L diesel
15 Salem Hemisphere Lite356QB