carb balancing?

[Punkstig]

It's such a simple job to do its well worth buying the carb tune (its also nice to have that sense of personal satisfaction doing a job instead of paying a mechanic!)
Biggest give away is the revs at idle, if everything is perfectly synced the needle will stay virtually static at whatever revs the idle is set at, if they're out of balance the needle will wobble and revs will fluctuate of their own accord, the worse the balancing the bigger the fluctuations.