Just want to share anybody that needs valve springs for there 400, this site has them in regular, and racing ones, and can get stainless steel valves for the bike to, but i warn u its not cheap

. You would have to be a hardcore 400 fan to spend that much money on this motor.
http://rds.yahoo.com/_ylt=A0oGdG03r5NMD ... pring.com/