I removed the estart from my 2012 WR450F. Last season it reliably started on the first kick, even if stalled when hot. This year its generally not starting on the first kick. I can't figure out why. Here are some things I checked and did - fresh fuel, 93 octane - cleaned the air filter - changed oil - bumped idle mixture up from the stock C1 setting of 0 to 8.The My bike generally starts well. It runs very well too. Lots of power. It doesn't use any oil. Why isn't it starting on the first kick anymore ? Time to check the valves ? Dirty fuel filter ? Poor spark ? Thanks !