I'm always having problems with my carbs too. The bike doesn't want to idle at all and when I run it around, it sounds like it'll only run on three cylinders or something. Runs very rough and it isn't smooth at all. First time this happened was after a long winter when it sat. I brought it to a dealer nearby (mistake #1) and it hasn't really run good since. After the dealer season, it sat again and this time I just ran it a lot and put a lot of gas through it. Eventually it kind of fixed itself but never really ran quite like when it was new.
Now it has had a while to sit, didn't get to ride much last season at all for too many reasons. I want to drain the carbs first and the tank, put new gas in with some Chevron I picked up a while back and see if I can do something to fix it myself. I'm looking for suggestions pretty much on how to go about this easily first before I start to really mess things up.