i had a sneaking suspicion that i had soldered and drilled too many jets on the crappy oval mikuni and bought a new flatty on ebay for 75 to my door. all i had to do, (other than mount it) was drop the needle all the way down. this motor has never run this smooth or made as much power.
those port timing numbers are right on. it's revving so much higher that i need to drop a tooth on the front sprocket before i get hurt.
i'm also calling out bigblockfiero,
gas ports are the shit! i had no noticable heat fade on my local test hill.