My cruiser starts great when cold. Full choke, one pump of the gas, and the key fire sit up right off. About 10 seconds there and then half choke. When it is warm it is really hard to start. It takes no choke and lots of throttle pumping and about 10-20 secinds of cranking to get it to go. It has an air pump and all smog is still on it. The engine is F, 74 fj40. Any thought on what is going on? Anything to make it better? (besides a better driver)