The bike has not been running right for some time now, I paid to have the carbs tanked and adjusted and it ran better but not right. I have also messed with them and still no better. They don't seem to respond to adjustments like they did a few years ago.
Symptoms:
Won't idle below 2K RPM
Starts ok, might even idle for the first few minutes
Won't idle after warming up
Runs ok above 2K, snaps clean anywhere above 2K (not smoth like it used to)
Carbs are clean (jets very clean)
Used to run real strong, clean
A number of years ago I balanced the carbs and idle, easy job
Now doesn't run good enough, vacuum jumps all over the place
Slight poping sound appears through the carbs
Is this a symptom of the bike needing a valve adjust?