I would also go up top and look if the condensation is pooling on the roof. I've seen many where the heavy ac and an older roof leaves the ac sitting just a bit lower than the roof line and the water can not go anywhere and that's where you will see green moldy standing water. Unlevel the MH so it can exit the roof.
My first time in humid Florida a mobile RV repair guy said that since we are so focused on having our RV's perfectly level, and more gadgets to get it perfectly level, that he see's more and more standing green water on tops of RV roof's from the ac unit because it doesn't drip off the edge enough. Drainage also depends on the amount of humidity and how hot the sun. Sometimes there is not a lot of condensation and the sun is hot enough to dry it out before it gets to drip. He advises that if you see it not dripping consistently during a hot day to tip the MH a smidge to make sure it gets off the roof.
I do that now and I see a difference how much more comes off the roof.
