This is an 81 CX500 - I have Murray carbs and I just changed the entire clutch assembly. Bike runs and revs excellent - when I put the bike in gear and give it gas - the engine revs (RPM's go up) - but the bike doesn't go anywhere. It seems to bog down in gear. Bike has been in storage for a couple years and it ran fine when I took it off the road. I cleaned the carbs and as I said - changed the clutch assembly. I'm vexed - any suggestions would be greatly appreciated!