rocker arm geometry

use a marker or dykem and then run it over to check the marks.

Is it to the exh side of the head or intake/valley side of head?

inf it's toward the intake/valley...just buy some shims to raise the shafts some, that alsobring the roller toward the valve tip more.

if it's the other way...you need to cut the stem heights down, or figure an offset rocker shaft 'more work'...but I have seen the holes drilled offset and stands ground a lil to move the shaft away.....a picture in a book.