I've not been able to make the front window leak. This afternoon's rainstorm revealed why... it's not "that" window. It appears the leak was coming from the side window and gravity was pulling the water across the carpet to the corner.
This window has a missing/broken screw and I think the water was coming in/ around the rubber seal that holds the window in on the outside. It looks like, if that happens, it is supposed to drain back out a groove that is notched into the bottom of the window. I think the water may have been draining out through the screw hole into the trailer instead. I've caulked the hole, temporarily and cleaned inside of the seal, removing quite a bit of dirt. I've not been able to repeat the leak so ... fingers crossed. We're expecting plenty of rain to test my fix.
FAIL! Rain has really picked up and water is dripping into the trailer from the bottom of the window, between the window and the wall. Going to try to tape up the window entirely from the outside to see if the leak stops. If it doesn't, It may indicate the leak is higher up and just finding an exit there.
Carolyn