True Dat man, I hear ya.
Although I'm at sea level here in Hawaii with a consistent climate of 70-80 degrees and 70-90 percent humidity, I could never get mine to idle good.
I had a '96 CR250 with a PJ on it. I could never get mine to idle consistently thru out the day of riding , Just when I thought I got it going good, it would always load up and kill the engine, I would have to keep blipping the throttle when at a stand still.
Now I have my 2002 CR250 with a PWK on it. I love it. Can't beat the PWK's. By habit I still blip the throttle though, although it doesn't need it.