Interesting that I just read this. I had a new A/C unit installed the first week of July then took it out for the weekend. The unit leaked water on the inside of the camper, dripping out of the filter itself. Remove the filter and you could see the water coming in from underneath the new gasket. I tightened the screws down some more, they were very loose, and this helped some. About sunset, when it was less than 100º, I got on the roof and took the cover off of the unit just to look--be nosy would be more like it. So I discover that the two drain holes in the pan were in the front of the pan. ALL water coming from the evaporator would drain out of these hole and go directly to front part of the new gasket, and there was quite a bit of water coming out. The unit was tilted slightly back so there was a lot of water just sitting in the back of the pan. So-why doesn't he manufacture put drain holes in the back of the pan so the water will run to the back of the unit and not have the chance to leak under the gasket? Mine now has two drain holes in the rear of the pan, and that is where almost all of the water drains out.