Valve Lash Adjustment Help

To answer steven190.I wanted to mark the balancer when i have the exhaust valve when its half way down as it is opening i can set intake lash.Also need to mark the balancer when the intake valve is just starting to close or start upward so i can set valve lash on exhaust.If i have a cylinder on top dead center as i rotate the engine 90 degrees i think that would be half way to its full open position on the exhaust valve.Then when intake goes downward or opens and starts back up i believe should be about 180 degrees after tdc. When you rotate the engine 360 degrees from tdc does that move the exhaust valve fully open then fully closed then the next revolution of 360 degrees opens the intake fully open and closed.I know i am probably confusing you trying to explain the best i can.Thanks