Damp/wet carpet

So have not covered fifth wheel yet, and had lots of rain, carpet on left side of slideout felt damp, then we got hit with heavy rain and now hand comes up wet on only that one side, I thought seal looked good on our 2004 wilderness lite, but maybe it comes in from around the moulding on it.
Gonna try figure it out, but will hope to get it covered soon as we are supposed to get some sun soon.