Hello and welcome to BYC! Glad you joined.
Have you posted your question in the Incubating and Hatching Forum?
Have you tried calibrating them with salt and distilled water in an air tight bag?
Hello and welcome to BYC, You found an Awesome poultry Forum to be a part of with many great knowledgeable members who are more then willing to jump in and help you with any questions you may have.