I understood, gasket match, polish combustion chamber, stay out of seat area,....., thats about it.

Bowl blend?

Contour around the valve guide??? what, relieve angles? clear out mass for better flow?

Unshroud intake valve in comb area? what clear area outside the
valve in the gasket plane? (obvious not going into gasket area)

Short run radius,,,not a clue

Pictures help me, but I'll take what I can get......