Dave Ett wrote:The HRC kit starts at 180's, as it's designed to work with the oil pump removed. On the street I doubt you'll need jets that big - I had no air filter and was rich on 180's on my race bike as I kept the pump...

Do you really think premixing has a big effect on mixture? To my thinking going from pump to premix only changes the mix about 3% at 32:1. That only pushes jets up less than one full step. Unless your jetting is already too lean you'll likely not even notice. That's been my experience anyway.