Ok friends. My stock 1980 has been running rough, and it has been progressively getting worse. I've cleaned the carbs good and changed the spark plugs and it's still doing the same thing. Most of the time it will run pretty good and then after 20 minutes it starts sputtering real bad in first gear off the line, and then a few minutes after that it does it in every gear. I have to twist the throttle hard until it sputters and jumps to life. I've tried riding it like this just to see what it does and after a while it bogs down, shuts off, and farts out the carbs. Then it won't start right away. After I let it sit for 5 minutes it will fire right up like normal and only do it in first again until I get down the road a little and it gets worse eventually bogging down and shutting off again. I've noticed that the longer I sit at a red light the worse it is off the line, and if I sit at several red lights in a row it's so bad I almost can't move until it sputters really bad, farting out the carbs, and then takes off and runs normal at high rpms. Sounds like dirty carbs I know, but I have cleaned them well and it still runs the same. Any ideas?