I pulled down the Oko this morning and gave it a good blow through with compressed air.
Put it back together with the same jetting i was running in the Polini PWK28, #110 main, #45 pilot, clip on the middle notch of the needle, mixture screw 2 turn's out.
First kick it fired and stalled, then i tried the choke and it fired again and stalled.
Turned the choke off and tried starting it couple more time's, it would fire up but stall as i let it idle, i needed to raise the idle speed a bit and then it started and run's and idle's now.
Here's a quick video of it running, i haven't adjusted anything yet, so should be a bit better after a tune ypu can hear it bog once.
I reckon it feel's pretty much the same as the 28mm carby, but it should ride a bit better once it's tuned hopefully not as touchy on the throttle.
The bike is still dirty after riding at Stus' place the other weekend.
[video=youtube;ZyyMngJXE8w]https://www.youtube.com/watch?v=ZyyMngJXE8w&feature=youtu.be[/video]