2012 polaris 500 idle races when warm

2012 Polaris sportsman 500 ho bought in march 2012. In Aug 2012 me and the boys spent a week In Maine with 600 awesome miles put on the machine,On the last day it wouldn’t start so when we got back I put a jet kit in her “my 3rd one Ive installed on different machines with no problems” since then when I start it cold it is a bear , but when she starts I have to keep the throttle pressed.If I turn up the idle so she Idle’s about 20 seconds later the Idle Is at about 2000 rpm , another 20 seconds she’s at 3000 rpm I turn idle down several times after it warms up back down to 1250 rpm , but when she cools down I start all over again. Carb has been removed 2 times and cleaned completely tuned up fuel filter plug ETC.I have an 1/8 inch play at the throttle.I will say that after the last carb clean 2 days ago she runs stronger than ever but is still hard to start unless I turn throttle way up till she warms up and then down to 1250 or so.
Any Ideas would be greatly appreaciated. Thanks Scott

I responded on your other post, but look at your intake boot or junction between the Carb and head, check and adjust if nessasary your valve lash, do a compression check.

You say this all started after the new jet kit? I would start there, it’s entirely possible the jets were packaged the wrong size or made wrong. Have you tried a new kit?