Hey guys my 89 250r idles and starts fine but when I go to give it more than 1/2 throttle it Boggs down and starts bucking like it doesn't get fuel and then it does. It will rev just fine in neutral but when there's a load applied ie its in gear it will bog down. any suggestions im stumped. And my lt has a fmf fatty with vforce reeds that are practically new

Thanks

 

Checked fuel flow? Maybe a real good carb cleaning