Put a 5.011-5.025 valve in the heads and watch the pattern center. The stand leans toward the valve.. the valve is straight up in relation.. so that means the stand 'if raised' will bring the rocker closer to the stem...while if the stem is taller... it only gets further away aka increasing the distance between it and the rocker/roller tip.
It's all relevant with geometry. Whether partial tackle it and keep **** from breaking or completely master it and have the perfect translation between cam and valve. Start on this side or that side...it all meets in the middle eventually..