Yea Type S Valve train is heard good for the H series.. But when it comes to B series. I would Get After market. Most B series heads dont even come with Dual Springs on each side. Also Most mild B series Setups make power to atleast 9K ( the ones I've seen ) You right about gearing.. That plays a big part in a setup. Question.. Talk about Valve Float. You would say, the Spring is the main cause, correct?