Here are scans of 2 prints. They're not the same frame, but from the same roll. Through several frames on the roll, there are those stripes. They aren't exactly the same on each frame, though, but all run top - bottom (the one is crooked because the print was crooked in the scanner). The film is Tmax 400, developed in tmax developer on a plastic reel. Did I not let it warm enough before loading?