I have only driven my Xfire Roadster once in the rain, got caught in a sudden down pour. Never had the problem that you are describing. It might just be the amount of water sitting on your top, I know it has been raining really bad in California. I know in the owners manual it says not to keep your car in the heavy rain for long periods of time. I have had several convertibles and none of them leaked, except my Sebring JXi but it sat out for about a 48 hour period during an extremely heavy rain storm. Might be wise to check with your dealer.