'11 TE449, won't start hot

Title pretty much says it all, bike has around 2500 miles on it, regularly maintained, has JDJetting power commander. Cold starts are immediate, once it warm up I need to finagle the throttle to make it start, usually what work best is to open it wide and then let it snap back, at that point it sounds like it wants to start and sometimes will.

I'm also not getting very good mileage (~30mpg combined singletrack/fast gravel).. all that makes me think bike might be running rich. I've reset the power commander to defaults so it should be just passing the stock map, next thing I can try is to disable it completely.

Any other ideas for what I can try?

Thanks!

Air filter clogged? Exhaust restriction? Obvious I know, RTV at the basics. Does sound rich. Mine has been doing this also lately, and I'm running PCV controller. I need to crack throttle a tiny bit to get it started.

Air filter might be a good lead, I replaced the worn out stock filter with this one

http://www.amazon.com/Husqvarna-2010-13-Dirtbike-Filter-OCP-2984-AF0/dp/B00WVBRIO2

and I remember I could feel the difference in how the bike ran, it was more prone to bogging down when you gave it gas in low rpms instead of reving up freely like it did before. I regularly clean the filter (Arizona..) but I also have it oiled up so the air throughput might be severely reduced.

I'll get the stock filter from Halls, see what it does.

It's embarrassing but the answer to my problem was in the question.. the bike was running too hot. I found a slow leak where one of my water hoses connected to the engine so I was low on coolant, took the hose off for inspection (no cracks), cleaned it, reseated it and so far so good. The bike now runs and starts as well as it ever did..