valve stem height - need some help

Its not a crutch for a short valve but its used to correct valve geometry on large lift cams. A short valve means all the other have sunk (gotten taller) or you got some carbon in the seat or even a bent valve. Id pull the spring and rotate it and see if it binds or doesnt have a solid thud when pulled shut. 'Lash caps' is not a good name for these, should be called "hardened valve caps"