Dealing with that right now. Try hosing the hell out of the car. I found leaks in the windsheild that way. The roof wasn't leaking from the hose, but the 4 inches of rain it just got hit with seem to have shown the truth. There was much less water inside than I would have gotten, it but still sucks. Moral- you may have more than one leak. The amount of water you're taking in can tell you alot.