dpro160 keepa dieing at low rpm

[Neon1990]

Hi fellas, my dpro160 has developed a bit of a problem when it gets fully warmed up it won't idle or run at low rpm for any length of time. when it's cold or not quite warmed up it runs fine.
It's got a 26mm OKO flatside on it and i've taken the carby off and cleaned it but that didn't help so today i did the valve clearances and still no better.
i'm at a bit of a loss what to do next please help

 

[hman]

sounds like you may have an air leak between the carb and engine. was it running well at all or have you changed carbys recently?

 

[Neon1990]

Nah i've had the OKO on there for a while now and it was running fine. Forgot to say i've looked for leaks as well and couldn't find any