Just got back from Daytona (had a good time). But on the trip to Daytona from Texas and back to Texas the 06 Classic would not start. Started fine the whole week I was in Daytona so I don't believe it is a heating problem (got plenty hot waiting in traffic). The problem only occurs after running down the highway for 3-4 hours, stop for gas, hit the start button, no sound nothing, let off the start button and you hear a clunk. Both legs of the trip it started fine the first gas stop. Second gas stop and from then on get ready to push start. Starts fine the next day after getting home, but haven't been on the road yet. Daytona Harley shop could not repeat problem, they just checked all connections batterly and charging. No findings. Any ideas?