& you could stuff a piece of rag down below the angled feed hole to manage the debris then drill/tap for a setscrew drilled to what you want. that gives you the option to go larger/smaller in the future as (if) needed. Ahead of time I do this to all (5) vertical cam feeds from the mains down to the cam journals & drill each setscrew to 1/16" which is plenty for cam bearing/journal lubrication (1/8 on ones that feed the heads if going that route but on those (2) I do them all to 1/16 & feed the heads externally or from angled valley oil passage mods) so I can do all (5) to 1/16".