Need advice on fixing idle issue...
 

On my 2002 600f4i it idle's at 1500 rpm at start up and for the fist 10-15 minutes. After riding for a little while my idle goes up to 2000 rpm and stays there when ever I stop which is to high. The problem is that if I adjust my idle and lower it then when I start the bike it will idle too low until I ride it for a little while. Anyone know how to fix this???

weird. when i start my bike, the idle is always higher than after i ride it. after a ride, mine idles at 1k.

I know its ass backwards so I'm thinking a sensor but have no clue...