Rough throttle low down

[Arbie]

Hi there. My foxeye has a really snatchy and jerky response when on only a whiff of throttle, say when your trundling along in traffic. Open it up a bit and it's fine. Anyone had this problem ? The bike had been sat for a couple of years before I bought her so im thinking maybe the pilot jets need cleaning ? Anyone done this and is it easy or best left to a mechanic ? Thanks.