Valve train geometry

Nice Greg thanks so much for the pics

to sumup
roller tip rockers shafts need to be adjusted - simple mechanics, geometry
Small block Mopar rockers are already shorter than SBF or SBC not easy to make them shorter economically and you would loose ratio
Small Block rockers ,not set correctly, ride on the outside of the valve stem and interfere with the springs and the the rocker body can the pushrod cup
which is a good reason to go with the cups in the rocker
High ratio rockers are tougher to do
lash caps and/or long valves make the problem worse
rockers with the fulcurms too low put more acceleration and pressure on the valve past half lift when the cam is trying to go over the nose
makes valve float easier
having the rocker angled way up on the seat makes valve opening SLOW compared to what the camgrinder wanted it to be
I do not care much that the roller always pushes straight down- its the valve motion that's FUBAR (already SNAFUED by the lifter/ pushrod angle