Hi All, I'm jumping into this forum without preamble. About a year ago I got my hands on a 2004 Honda CB1300 with about 40K on the clock. About 6 months after I got it, I started hearing (and feeling) vibrations and what can only be described as a grinding noise when under acceleration. The noise is only audible when under acceleration in first or second gears and only when the RPM is under about 4000. I can't figure if it's a gearbox issue or clutch problem. Does anyone have any experience with this issue?