Anyone have mold issues?

. We crack the vents and stay on top of cleaning it with bleach products.

Will never understand this "cracking of the vents", windows, etc. If it is humid outside, this lets the humidity inside, thus causing your mold issue. And people wonder whay they have mold :h I live in Florida, and completly button my TT up while storing including covering it. No mold ever.

Try closing the windows once and see if the mold is still a problem.