Trust me, I thought of this while showering and before Rich's post.
Permit the current plunge cut rule to stand and allow deburring to .250”.
I'm sure then egine builders are licking their chops with this propsoed rule.
Everyone has excusses why items are not correct, including the engine builders. The SMAC/CRB/BoD should look at this quickly created proposal by good people (no disrespect on anyone) and say, do they have a clue.