Poor starting

[Wizard9956]

Hi, I bought my fzs600 2003 a few months ago with 13,800 miles on the clock, it was running poorly at low speed so I stripped and cleaned the carbs , and it then ran much better. Lately I’ve started having trouble starting from cold , it doesn’t fire straight away on no3 cylinder ( cold exhaust header ), after about 30 seconds of rough running no3 warms up and idles perfectly, and rides perfectly. Has anyone had this sort of fault , I’m tempted to blame the carb idle circuit, but shouldn’t it run poorly  when warmed up too.
Any ideas great fully received.


Cheers Wiz