So we seem to be surviving the deep freeze here in Atlanta; freeze protect has been working as intended. My VSP, however, has been making a rough sound during this cold weather, primarily at higher speeds during a priming session but also sometimes at lower run speeds. It sounds like something in the motor area, like blade rubbing against something. Could this just be the frigid temps affecting something and nothing to worry about or should I be more concerned? I am attaching a video file where you can hear the operation. Thanks and stay warm!!