screen the valley

IM
Its not clear what you are trying to achieve.
I understand the words, but not their underlying meaning.
Is it possible that your roller lifters are coming up too high and the oil holes are becoming exposed, only to spew oil everwhere?In which case that has to be addressed!
Or is the top-end over-oiling?
Or other; such as You are trying to keep hot oil off the underside of the intake.Period.
I wonder if a better question might be" why is there so much oil flying around in my valley?"And the biggest question of all;how did you arrive at this conclusion?