Hi bike starts good cold or hot ,but when i use choke on cold engine, idle raise for about 10 sec and drops to 1580 rpm . I also can not set idle more than 1580 rpm or it will hang . From 1580 to 1640 rpm a slight blip from throttle will bring it back down . any setting over that it will hang bad and high . i had this problem for over 6 month so i have tried everything i have read here on TT from 2002 to 2016 , twice . fcr 39 mx blue needle jd jetting 2 clip from top or red 4 clip same problem 45 46 48 or 50 pilot same problem no pilot air jet 165 main fuel screw i.5 to 2.5 turns depending on temp (between 40 f and 70 f ) just changed slide seal just changed cable 120% not mechanical or air leak i do have a lot off carbon residue on spark arrester very bad fuel consumption beside all that , bike runs fantastic from low to high RPM i just would love to have my idlle set to 1800 rpm ( lot off slow single track riding ) Any ideas are more than welcome .