Many canopies creak, it's just the way it is. As Brett mentioned, check your arms for parallel and rise/fall speed. See if you can isolate exactly where the noise is coming from - the actual canopy, or the body mounts. My bet is a loose bolt or two and/or the arms aren't parallel to each other and it's causing stress on the lower body mounts. The cavity behind the mount acts as an amplifier and that's why you're hearing the creak.