if yours is like mine, the inside trim/window piece was not sealed. We to built up lots of condensation on the inside window.
i found out it was not sealed when i unscrewed it and it fell out. just a a hole with gasket of seal.
it has a nice foam gasket now.
DW also added a nice piece of foil bubble wrap stuff and wrapped it in a print that matched the cedar creek theme and attatched it to the screws using loops and it now blocks the bright SUN when i sleep late