A couple of weeks ago a made a 30 mile trip to work. At about 20 miles, while coasting to a stop light, it stalled and did not easily start. I put on the choke and a lot of throttle and got it started again, although pretty rough. I tried to keep the revs up to prevent another stall but at another light a couple miles later it quit again and would not fire choke or no choke. I fretted and let it cool a few minutes and tried it again and it fired right up. Last night after an easy ride of only a few minutes downtown, again while coasting to a light, it quit. Again with choke a got it to fire but couldn't keep it running. It died and wouldn't restart. I walked a mile home, hooked up the trailer and went to pick it up. Got entertained by a passerby who gawked, drooled, asked a lot of questions, and guessed that it was a 1916 Back home I kicked over and it fired immediately. I pulled the plug and the color looked great but I will pick up some spares on tonight. Any clues what my be causing these hot stalls? I'll be riding in a parade next week and need to make sure its reliable. It would be embarrassing to have to push it past 30,000 people.