i have a pwk 28 d slide carb, when i ride in straights no bumps the bike is fine. when i get on the track start hitting jumps and breaking bumps, whoops etc the bike bogs down and wants to stall out like its not getting gas. i know people have bought this topic up saying it was the float level maybe? so how would you go about adjusting it? its really annoying we played with everything changed the spring. it just does it when you hit bumps and land hard. any one know? and the carb is practically new.