Hi fellow Chroma Polaris users! My Chroma Polaris has been doing this weird thing where it transposes itself down 2 or 3 semitones randomly. Everything remains in tune, just transposed. Seems to like hanging around 3 semitones down from where it should be most of the time but then will randomly jump up by 1. Occasionally the notes will be their actual corresponding keys but only for a minute or so. Any ideas what could be causing this?