I have a 2022 GD Imagine 2600RB. When it rains, it pours water down the side of the trailer under the awning. Originally there was only one small leak and was repaired (under warranty). I have seen posts that say to caulk the railing, but where? From underneath where it rests against the fiberglass side? Or from the top where the rail starts against the TPO roof? Any suggestions, youtube videos are welcome as the awning doesn't protect us from ANY rain.