Good day: My a/c unit is approx 8 yrs old. It just has begun to fill up with water at the cooling fins in the front, & actually is spilling over into the room. I took the a/c out of the wall today, thoroughly cleaned the debris from it (previously done at least 3-4 times), changed the filter & cleaned the fins. The air cond still does the same leaking as it did prior to this. It cools well, but does not seem to drain. What could be wrong? What can be done to remedy this problem. Thank you.