When I bring in the main slide, there's a lot of water that collected on the top.  When you make the first turn leaving the park, I get dumped on.  I assume the the top seal is not sweeping it off as it's retracting.  It doesn't have to rain, it does it when we use the A/C.  Everytime.  I can't understand how the condensation is getting under the topper from the A/C.  Could the A/C not be draining correctly?  Any thoughts?  

I also have a 19 Southwind 35K, but had a similar problem with a previous coach.

Before retracting the slides I raise the front jacks allowing the water to drain off the back.

Hope this helps.