I wanted to pass this along if someone out there experiences the same problem I did several years ago on my 79 Delta 88, with the belt reveal rubber seals cracking which eventually would let water drip into the door panel. Mine were just starting to crack and very luckily, I found a 78 LeSabre which has the same doors as the Oldsmobiles, and the Buick had the wider stainless reveal trim with the rubber. They were all like brand new and the rubber perfect. It was another example of a garage kept car that got traded in, went to the auction then to the scrap yard. It took a day to remove the rear windows and vent windows, to install them as the factory did. Im glad it worked out and hope someone finds good luck with theirs when the time comes.