I've had a few overflowing over the years, and as a result found a few ways round this problem that could be worth a try before stripping the carbs off.
1)Tap the offending float bowl with a small bit 'o' wood, Lightly!
2)Turn the tap off when stopped, half off when at traffic lights. Use the bike reguarly, (like every day) and it may start to behave.
3)Drain the carbs, or turn the tap off and running the bike the last half mile home on contents of carb, then disconnect fuel hose(es) from tank and fill with neat redex fuel aditive and leave to soak overnight. Empty the lot out next day(ish) Re connect fuel supply to tank and enjoy a smug ride without the aggro of removing the carbs.
4)Fit an 'in line' fuel filter and possibly even check the one on the tap!
(5; having shared the above with the rest of the group go and fix my bike!) 8
