I had a leak on a few spots and as stated above, one was a seal on a window. One was also on the closet slide, the brown trim had a crack in the caulking. Sealed it up and no problem.
I did have major leaks on the slides, when out, but had the dealer fix those pronto. Water would come down the sides of the slide outs, and follow the track back into the trailer. They put some silicone dams just behind the wipes, and that allowed the water to drop before coming inside.
On another note, everyone who has the three holding tanks, check the one from the kitchen. It has a pipe that joins with the main pipe, visible below the trailer. It will crack at the elbow just under the skin. No bracket holding it tight to trailer. After a few trips on the US highways around Atlanta....
Oh, and also the one below the fridge, for those with the outside kitchen... it also is not supported/clamped.