I´ve had the bike a couple of weeks and never had a problem. The bike usually starts on 1 or 2 kicks. My 7yr old son rode the bike for about 30min last night and parked it. When I tried to re-start it, NOTHING! I changed out the spark plug, checked the fuel. The kick lever seems to work fine except it feels like there is less compression. It looks like the piston moves up and down normally when I actuate the kick lever and...Nothing. It´s not even trying to start. And it still feels like there is low compression. The kick lever moves very easily. Prior to the problem everything was normal, no odd noises, no smoke. Please help. Larry