A picture of your rig would help. But, I had a fiver that had a leak at one or both of the big lag bolts used on one end of the awning mount at the upper sidewall. From there the water dripped down onto the kitchen window framing, and eventually could be seen dribbling down onto the kitchen counter. When I pulled the window to check things out, the upper part of the framed opening was rotted out. I ended up removing kitchen cabinets, some paneling, replacing a bit of wood, and putting it back together. Including, sealing the lag bolts. The lag bolting of the awnings is even worse than most bad RV sealing practices. Many makers just screw in the bolts with no caulking whatsoever.
Photo of mount and bolts that leaked: