I have an 04 wr450 with a fresh engine, 13.5 je piston, yz cams and timing, factory r&d pump cover and fuel screw, vortex x10, rs3 full system and was dyno tuned after rebuild (59hp). When the bike is cold, like after sitting overnite it will start straight away, just pull the choke and hit the button. Once it warms up it will still crank fine but kinda just burbles like timing is out and will not fire, but will start instantly off the kicker. Sometimes it fires off the e-start after 4-5 secs when hot but not very often. I have checked the valve clearances and they are spot on, voltage to the cdi while cranking doesnt drop excessively, battery load tests ok and carb is jetted properly for my area. Is this because of the yz cam/timing or another issue all together?