Hey! So I´m new to owning a motorcycle and i have a 78 cb400. It had 15000 miles on it when I got it and had run great until today. It for some reason maintains HIGH rpms with the clutch fully engaged. High being the equivalent of 5th at about 55mph. Any suggestions as to what might be going on with my Stella? I checked my cables and nothing seems to be sticking. My girl does leak some oil from the top of the motor but nothing major, just two seals i need to change with the next oil change.