had the head off my 200 c.i. for machine work for a valve job. now I'm having one of those "I can't remember moments" - I took the rocker arm ass'y to the machinist to be cleaned and hot tanked but yesterday when I was reassembling everything I thought I was missing a tab that goes on the top of the #1 pedestal to cover the oiling hole that drips to the dizzy gear. Am I remembering this wrong? and what happens if I omit it? thx