Hi chaps, I need to take the head off to replace some valves as the engine is tapping. Ideally I'd like none of the valves to be open when I remove and install the head. I have read on here that you shouldn't turn the cams independently to just get the valves closed as they may clash, so I guess removing the cams is what I need to do?
I have found the thread which mentions the notches in the end of the cams but it like to know a little more. I havent been able to find any detail regarding the removal of them. It may be obvious when i do it but, I'd like to know exactly what I'm doing, after reading the trouble you can have with valve clashing.

Thanks