I just got my 450 back together after finishing the following modifications: GYT-R Exhaust, DSP Power Now, Cleaned up head, Wiseco 13.5:1 piston, Hot Cams, K&N air filter, vented airbox. I am running 93 pump gas, but I am switching to VP Red for the next time I ride it. It still has a slight hesitation when you crack the throttle from an idle, and won't start unless bump started when warm. I am pretty sure it is jetting, and I am thinking to go leaner on the needle. Does this sound right, any other suggestions? Thanks.