my crx vtec actually had 3 lobes and 3 rocker arms 2 big 1 little on the exhaust side per cylinder, and the cam does infact move across. Me and me mate took his head apart after he blew it up to see what the crack with the vtec was, and still couldnt work it out with the head infront of us. I think you need to look at it with slanty eyes to see how it works