An update: I talked to the machine shop today and they were very nice about the problem and seemed genuine in their concern about it. He told me, after I explained the noise that it sounds more like a contact noise. He said maybe the windage tray in the oil pan. He said pull it, check a couple of things and if nothing is found bring him the short block and they will tear it down and if they find something there they will fix it. So far so good, well good for a bad situation! EB
