That white is just a leaner idle curcuit most likely, i'd fatten it up a bit or jet it up, the street avangers are on the lean side from the factory. And if you look closely at the ground strap, you'll see the blue heat mark, it should be right in the middle of the strap between the tip & base, Its closer too the base, that meens it has too much total timing, i'd lower it to 35*, most every BB i've built run the best at 35* & no more.