I hVe had this issue. One time with mu grandpas Pacific scale from the early 50"s. Since i live close to Grand Island, NE, i took it in with little expectation. The guy at hornady looked at it and gave me a brand new scale. That svale bbn lasted me several years and wouldnt zero a fews months back. My dad took it in and they sent it 3 miles to Alda,NE where they do all the specs on the scales. A week later my scale was fixed free of charge and works great.
They will make it right.