yesterday the bike stop going into gear,in neutral when you put in reverse or 1st you can hear the bike go into gear but will not move. The rear belt has moved on the rear pully at least 1/2 way to coming off. So i thought for sure the red dust death. pulled the front pully cover and do not see red dust, but from what I have read it must be the front pully. if there is no red dust can the pully still be bad