Oh i see. lol

On the retainers,from what i read it seems the intake side are the problem. The exhaust retainers don't crack, because the valves would hit the piston first. Also, the exhaust valves don't float at the same RPM as the intake because of their weight.

heres a bit more reading

http://www.s2ki.com/forums/index.php?showtopic=483032&hl=cracked%20retainers& st=0

http://www.s2ki.com/forums/index.php...etainers&st=25

http://www.s2ki.com/forums/index.php...retainers&st=0