I have 130 main jet in my Eiger, K&N Air Filter and baffle removed. The spark plug is a greyish white color. When I try to give it choke, it dies, but it runs pretty good out on the road. I have the mixture screw out 2.5 turns. I just want to make sure I'm not running to lean, anybody got any input on this. Why won't it take choke?

 

What are the circumstances of the choke killing the motor? Is the motor cold, or hot? If its hot, then its normal for the choke to make the mixture too rich, to keep it running, at an idle.
Heres a good article which describes the symptoms of lean and rich.
jetting
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