Im tuning my 19mm phbg on an e-50 polini, with malossi four petal and I can get the idle setting quite right.
I have tried a 55,50,45 idle jet and the idle speed screw doesnt effect the idle at all. It idles high and fast and rpms dont drop right after hitting wot and releasing
No air leaks, and the plug keeps coming out semi wet.
I would guess the idle is too small due to the high idle?
Needle is on second notch and a uni filter for air.
Get bigger jets?