Hey gang. Got a 75 xs650. A new problem started the other day. When I started it up it kinda sputtered a little and then ran fine. Got a few miles down the road came to a stop and it was idling at about 2200rpm, never did that before. Always idled at around 1200. It's been doing it ever since. I've been doing a lot of research and have checked and adjusted everything I know to do (timing chain, valves, idle screw, air leaks, hung up throttle cables... etc.) I'm stumped. The carbs were rebuilt. New jets,ultrasonic cleaned. It was running great.