cold start warm day problem..

bike won't start cold on a warm day. starts easy with choke and a few throttle twists on cold day. hot starts are easy on cold day without hot start knob.

once it was hot on warm day, it needed hot start to start.

the only changes i've done are cleaning the airfilter. i did run it on the new clean airfilter yesterday, with same dilemma.

2004 te450 with fcr41, jd jet kit (can't remember settings..)

I see no one has posted anything to try to help you yet, so here is my $.02. Mine has a VERY specific cranking procedure. If I follow it, the bike will crank. If not-flooded.

It even says in the manual as follows:

1.) Choke out (air temp doesn't matter)
2.) 2 quick full blips of the throttle.
3.) press button-keep hands OFF of gas.

This isn't too bad to follow. I know lots of guys will whine about having to do anything that requires some thinking or effort, but it really is quite simple to follow. However, if I deviate from this at all, the bike will not start. Even when I've been riding it for a while, most of the time, I will still have to blip the throttle once (no choke) to get it to crank. I don't know how long you've had the bike or what your experience level with them is, but I hope this info helps and was not just repetitious common knowledge for you. If it was, I apologize.

To add to what Kelly said, I just realized you are in WV. Are you in the mountains? Elevation could be the reason behind the jetting problem.