There seem to be two validation steps when selling objects on Shapeways: First the file gets validated on upload, and then again after ordering. We recently had one of our country shapes pass the upload validation, but after putting in the order and paying, we received an email saying that the item cannot be printed. Is there a way to get the full validation before ordering? We have a few shapes where we are pushing the design guidelines a little (with stainless steel) and would like to know if what we are doing is printable without having to order it. Is that possible?