2009 kx250f so I am having a issue trying to kick the bike over when its cold you can sit there and kick and kick bike wont fire. but then you can pop the bike it fires and runs good and then when the bike is hot you can kick it over and it fires. I've had the valves adjusted prior and had a leak down test done. valves got adjusted and leak down test was good. side note when kicking bike it feel easy to kick like it doesn't have much compression. what could it be? top end rebuild time?