yeah, i think i am losing oil in #3. i havent done the oil in cylinder test for the valves yet though. lol once apon a time i did a valve adjustment and may have slightly bent a valve just from tap. nothing serious enough to break anything. but i am gonna do that very soon. I have a few extra valves laying around that i am sure i can use. Are the GS-R valves the same size as LS??