Every attempt is made during the the design and testing of our products to ensure it meets the specifications stated on the product description page and manual. If you are missing a part, please use email@example.com, and we will send it at no expense to you. If you are experiencing a problem with the construction or operation, we will help you as best of our ability via e-mail with the designer. Any further help, we ask that you seek out your local ham club or “Elmer” for help. We find that another set of eyes to view your issue is time well spent. The low cost of our kits does not permit a service department.