OK, here's the situation. I just installed an all new top end, timing is dead on I just re-did that this morning, piston is in correctly with all rings on properly. I can not think of anything that would be wrong but when I kick it over, it's normal the first time plenty of compression but nothing comes out the exhaust, and then the next couple kicks feels like the kick starter is just going down and doesn't feel like the piston is moving or anything.. I've never even heard of this so I didn't know what to search for sorry if it's been covered before. I just want to get some riding and practice in before the race next friday!