Good point, but I can't play too much since the Comp rocker arms deliver oil to the adjuster thru a waisted area and that area needs to be lined up in the rocker arm body to work right. So at most, there is only a few turns of adjustment that can be used before you start to restrict the oil path to the adjuster ball.

As for the previous question: the oil pump is a standard dual inlet Milodon. I don't recall the part number but it is just the classic aluminum pump that Milodon has been selling forever. I bought this pump used in 1982 and have used it on a lot of engines over the years. It might be the oldest speed part in my entire collection that is still in use.