Have EXACTLY the same problem. Reported at 3200 miles. Dealership called yesterday (5 weeks after showing them/digital pictures for Ford rep. review). They got authorization for new/replacements, but the parts/service advisor say, right out of the box they already look like the new units will have the same "problem". Have read on this forum that some dealerships are being told that if customers are willing to wait awhile, new replacements will be forthcoming and have better chrome clad finish. Don't know if this will help you, but I would be willing to wait, if this were the eventual outcome (haven't been offered that alternative just yet; heading in to discuss later this week).