Ok... So I had my MOMO laying on the ground thinking it was ok there for a while. Wrong. My dog had "marked his territory" on it and I had the cover off. Now the gears make a more "grinding" sound. I know they have always made a noise but now it just sounds bad. I have included a sound file. (It's a little quiet... ) I was wondering if this would be bad or something I can just let go and deal with. I like to take things apart but not valuable things like my wheel.