Starting issue

Ok gotta pick your brains on this one. 2013 KX250F shimmed valves to bottom of pec. would rather be in the middle, but its spec nonetheless. Fresh plug, will not start. Choke on, kick 30 times, nothing. One shot of giddyup in the airbox and it lights up 1-2 kicks. after it's warm I can fire it up with one stab of my hand. Walk away let it cool down for a couple hours, kick 30 times again ...nothing. One shot of go go in the airbox, pow lights right up. Consistently. Been doing that dance for a week or so and never fails, same routine. Checked the throttle body injector today (it has 2 injectors) and it squirts nice and strong just like I expected it would. Thing runs great when it's running, and starts up easy when it's warm or hot but pulling the seat off or sticking a catheter tube isnt a great option, so I'd like to figure this out. Any ideas bouys?
 
Top