airbox is all good, idle is set at 1500 when warmed up.

it's the usual kind of lumpy idle when it warms,barely going up or down from 1500rpm

I have a feeling it's a fuelling/ignition gremlin that's making a slight misfire that's echoing up through airbox and I'm only noticing it now with the dna stage 2 cover.

I'm leaving it over to the mechanic on thursday for new tyres so will ask him to have a listen while it's there