Well, lucky you, I've been trying to fix a window leak on that driver's side since I've had the coach.
I had a similar problem in the same place for the first ~2 yrs after I bought my coach. The leak would come in somewhere above the driver but it was occasional and we could never find it. Finally, I decided to replace all the ICC lights on the front cap because I could see cracks. Magically, the leak went away and hasn't returned. That was ~2 yrs ago.
Joel,
Then again, with the coach tipping forward, that would allow more roof water to spill over the lights and when its tipped backwards that would decrease it, so I guess the logic works in either case.
All I know is, I was in Maryland and had first seen the issue in West Virginia (had a rain free trip across country last summer), so I called this "reputable place" near Baltimore, and took it in, and T-storms were expected, so after leaving it, I called them back and asked if they put something over that area of the coach. As even heavier storms were expected (this is real rain, not like what we get here in Oregon), I drove back out to the place, and as I'd feared they'd done nothing to protect the coach. Upon entering it however, even though we already had more rain, the fabric beneath the window had dried completely out and I noted that the slope of the coach was to the rear.
So, whatever it is, its not happening with a slope backward - only while sloping forward. But, you're right, could also be the lights. I'll take a look on vacation - bringing the ladder and all sort of STUFF since I really can work on it more easily when I am with it on a daily basis.
Thanks for the input Joel,
Mike