Hello everyone, I was lucky enough to get my hands on a 2009 250ri. With super low mileage. It pretty much didn't move until I purchased it. Upon purchase I have immediately noticed that the bike vibrates(mostly feels at floorboards) at rpms higher than 6500 and at speeds above 62mph or so. I have already replaced both original tires and balance wheels, not much difference. I have went further and replace the belt, what improved things slightly, but not enough. I have already checked valve clearances and adjust properly. Any suggestions as to where else to look?
Otherwise the scooter seems to drive just fine with good acceleration, etc.