I took it over today and spoke to one of the guys I recognized from when I purchased the truck. I also asked to speak the the SM. I was told that the SM wont be in until next week, he just had a baby. He went and got one of their detailer/bodyshop guys and he brought out some 0000 steel wool. He ran it over and no change. Said it was def under the paint. They call it "rail dust". the truck come in on trains and I guess tiny shards of metal make their way into the paint. They said they had an impala with the same issue before and they wound up replacing all the chrome. So I was asked to bring it by next week once the SM returns. Everyone is very nice there, so we'll see come next week.