ok so I started up my bike today and it was idling higher than usual when I reved it the idle it would hang for a little then after 30 seconds it goes down then down lower until it stalls I had my airscrew out 1.5 turns and my main jet is 280 when I turn my air screw all the way in i idles perfect and revs the best and idles down fast do I need to put a bigger main in it?