I have used these rockers on a few mild builds. Performance Quotient PQx Platinum Series https://www.summitracing.com/parts/pqx-3244011/make/dodge they use an adjuster like you show. They have a hole drilled in the cup and it oils threw the rocker itself, small slot on the adjuster screw. They seem to work well so far anyway. I actually prefer that type of adjuster as it keeps the pushrod from swinging to much as it goes through its motion. Just look at the standard mopar style rocker and visualize the arc of motion of the adjuster. the longer it sticks through the rocker the longer the arc of motion is.