Oko 28mm flat slide too big for gpx 125?

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Zaydin

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Gday guys
I have a gpx 125, have a 28mm oko flat slide that I can’t seem to get to run, runs with choke on but not ideal, has 100 main jet 34 pilot. Turn choke off and it seems to run out of fuel and stall out once you open the throttle, like it’s not getting enough fuel. I have a 28mm round slide unsure on Brand which has 130 main jet and unsure on pilot I didn’t check but it runs pretty good.. I’ve upped the oko jetting to 125 and 130 but still seems to do the same thing, is it just simply to big a carbie?
 

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