First, take a deep breath. It is difficult for major shipping companies to deliver heavy packages across the United States flawlessly every time. We recommend opening the box and looking inside. The items are packaged fairly well on the inside, so just because the outside box is stained doesn't mean the contents are dirty as well. If you do encounter problems, please contact us immediately. Don't start disassembling the item just yet and put the item back in the box. Please contact us first to see if there is an easier solution. We have many replacement parts and knowledgeable staff on hand to help with any situation. You can contact us: support@deerruntreadmill.com