Re: WOW ... stop the rust while you can ...
I've already posted what I believe the problem is:
I believe the reason the weather stripping is holding water is there are 2 breaks in the channel that are holding the weather-stripping in. After you pull out the stripping and dry off the areas you must seal up the channels with black electrical tape. The reason the stripping is holding the water is because the water is getting under the stripping from those breaks in the channel. After those two channels are sealed no water will get under the stripping and cause the rust. The breaks in the channels are at the front and the rear of the doors about when the channel is starting to bend upwards to go up the door.
Hope this helped!!!