oko carby

Hey guys....quick question, Im a member from the US...so DHZ is fairly expensive to buy from, but I did find a site from the US which have these OKO carbs forsale, only thing is its a predominantly 2stroke website...so im unsure as to does OKO make 4stroke / 2stroke carbs?....please help...

After installing a oko 26mm flatslide from dhz, my bike (dhz 140 outlaw ( the one with the zongshen)) is sluggish and usually bogs down and dies when accelerating to WOT off idle (top end is fantastic though, way to go oko :action-smiley-033: ). I have fiddled with the air mixture screw to the...