I hadn't started my scooter for about a month because of the cold weather, so I charged up the battery and it started yesterday on the first try. However, I noticed an unusual exhaust note, sort of a light metallic clicking from the exhaust. It diminished after a few minutes, so I decided to ride for about an hour. Everything seemed fine, and at the end of the ride the sound was barely noticable. Do you think it was because it hadn't been ridden for a while? Can I damage the scooter this way?