I have an issue with tuning my bike, it runs an M400 and it starts and runs fine, idles well and is responsive and runs clean with an acceptable air fuel ratio, until it's fully warm that is.
While it's cold it starts fine, as it warms it's fine but once it reaches operating temperature it starts to load up and then of course runs rough, stumbles and eventually stalls or needs a big rev to clear it before going through the cycle again.
Can anyone tell me where to look, would the accelerator enrichment area be causing this? i'm kinda lost and can't seem to find any other examples of my problem for reference.
Thanks.