how do i know if im too lean, other than a plug check? everything seems to be running great but im still a little nervous, my jet sizes are quite a bit leaner than every body else an 5,000ft. if anyone has suggestions please feel free to share.

 

any popping or pinging noises come from it?

 

If your plugs are running a light tan to a light brown, your jetting is ok. You just dont want to be in the white range. After i got my airbox flowing real good i put 152f 155r main jets and was still a little lean. Then i put .020 shims on the needles and i'm perfect now. Your jetting is all going to depend on how much air you are getting to the carbs. Hopes this helps you.