When my P2V (not the plus) is powered on with the motors stopped, it seems that something like the camera servo or some sort of little cooling fan or something is making this annoying whining noise. It's done this since I first got it a little over a week ago. Is this normal or does it indicate a defect? So far nothing has actually failed to function (camera moves properly through it's entire range), but the noise is annoying and I'm concerned it may indicate that something is defective. If so I want to get a replacement while I can.