Thanks for the info Fourthclass. I found that the gap was between the window glass piece itself and the sealing surface of the front cap. I sealed it up using a non-hardening caulking cord and then blasted it with a hose to leak test. So far it seems to have fixed the issue. Coachmen recommends having an automotive glass service come out to remove and then reset the window with new adhesive. That might be next if the problem resurfaces.