07 big bear carb jetting ??

[unstopable-bear]

i have an 07 bb 400 im wanting to instal a snorkle on and im looking for some input on where to start on the jetting part. it has no motor mods still running a stock style filter also, i live in ms about 350 to 400ft above sea level if that helps any.

Also ive had the bike since it was new it has over 3400 miles on it and ive noticed it cruising at one speed for a while the header starts glowing super red. I know that means its lean but how would i go about getting all this in order?? it runs fine but even stock it before the lift and tires it was slower than my buddys 08 by just a little.. any input would help thanks in advanced

[lawny]

Since everything is stock on that bike, makes me think that you have an air leak from your intake boot to your carb, creating a lean mixture. Check to make sure the clamps are tight and that there is no holes in the boot. A mixture that is too lean can lead to a meltdown.