X Head Assembly & Installation - Comments Requested

Remove the valve springs and lap the valves to the seats.
Put valve in its orig spot with valve grinding compound and rotate back and forth a few times. Helps seal them up. About an hour labor and $8 valve grinding compound.
You can use a drill in the retainer end of the valve. Check out youtube. Better description there lol.
Your going to have to explain what you mean by tuneup/newfie grind.