Wayne67

Hi, I'm wondering if anyone can help me? I've just rebuilt the top end of my FZX 750 and when it came to balancing the carbs I've picked up a problem of the idle speed at 1000rpm being irratic. It keeps dropping to around 500rpm then cutting out.When I try to even it out with the idle adjusting bolt on the carbs it doesnt respond to the adjustment? I've cleaned out the jets in the carbs which I must say where a tad furry due to it being stood for around 5 years and still have the problem???? any suggestions on how to rectify this problem? Wayne