X Head Assembly & Installation - Comments Requested

When the local shop inspected your heads, did they say anything about the surface roughness? If not, I personally would not bother. There is a certain range of average roughness (Ra) that is acceptable. (For example, 60 to 100 is the range recommended by Felpro for their Permatorque on iron heads.)

I bet some guys here could run their thumbnail over the surface and get an idea of the Ra from long experience. (But I know I couldn't.) It is about impossible to assess simply from an internet pix.