I fixed my dripping issue by putting more open tubs full of water in the incubator. You can also put something under one side of the box so the water rolls to the end that the eggs aren't on. The condensation forms because the incubator may not be very well insulated - so the incubator is colder than the inside of the egg box. This can be resolved in the future by calibrating temps with the temperatue probe on the outside of the egg box, so the incubator is never hotter than what's in the egg box - I've never done this though as there's more room for error with this method.