Ive got a Reba Team and just reciently noticed that my stanctions are bone dry. for the first few months i had it they were well lubricated with oil but all of a sudden theres nothing. Also ive noticed that on the left stanction (riders position) that there was a black residue, quite hard to get off, like a rubber that had dried on. Any one know anything about this or what to check? Thanks for the help.