Well, changed my oil for the first time since I bought this bike used. I noticed there was lots of very small metal particles stuck to the filter. I know this system also lubricate the transmission, my question is: is it abnormal to find lots of metal particles on the oil filter? There was about a pinch total and it was all trapped at the filter. Nothing on the dry sump tank screen etc. I know particles is normal in transmissions, just want a second opinion from others who noticed the same deal, is this in fact, a normal amount?