I'm trying to remove the rocker shafts from my h22, but they don't want to come out. I've removed the plugs and threaded a 12mm bolt into the ends of the shafts like the book says, but... Do I just pull them or do I have to rotate them or something? Thanks for your help! P.S. sorry for posting in the wrong thread before, I realized this is not a swap question after I posted it.