A few months ago I picked up some Kodak Polycontrast III RC paper from Photo Warehouse. It's taken me a while to get around to using it, and I've run into a problem, illustrated here in a roughly 4x3-inch crop from an 8x10-inch print: The whites are good (whiter than they appear in the scan), the blacks are good, but the midtones (in the out-of-focus trees in this photo) produce an ugly streaky appearance, similar to an inkjet printer with a few clogged nozzles. Prints from the same negative on other papers look fine. I'm using DS-14 as my print developer, and I'm fixing in TF-4. I've tried extending my development time from my usual 1:30 to 2:00 with no change in the results. So: Can this paper be rescued? I'm planning on trying another developer -- probably D-72 -- but if that fails I'm out of ideas. Thanks for any further suggestions.