I have an 81 Polaris cutllas ss. It runs fair until it warms up. Then it bogs and gags until it reaches a high speed. I noticed gas in the airbox so I replaced the needle valve and ajusted the float tangs. The floats aren't sticking so the fuel should shut off. I have also noticed that if you pinch the gas line off going from the fuel pump to the carbuerator it runs better. Can anybody help? I am about ready to tear my hair out! I played around with it all last winter and never could figure out whats wrong. It only has 400 original miles on it. So I know it is not worn out. Any sugestions would be appreciated. Thanks.