So I got some heads and I thought man the combustion chambers chould use a s;ight grind and polish.... well I sanded a lot... enough to drop a few cc's and there were still dimples... My camera cant catch em but they make the surface dull. Nothing penetrating the head but some of those pits are DEEP! I tried to just ignore the issue and went through from 180 paper to a 240 flapper wheel to 400 dry and a green soft wheel to a red then rogue.... Feels great but look nasty.... I think the surface is not going to help with carbon which is my main enemy.... Is there a filler besides welding or do I just need to say screw it and clean up the outside and get it decked? This is my last snag on the head. I wish I could get a good shot of the pores. but after several shots I think I would need the good camera and thats a PITA to get the photos from there to here. I will say one good thing. they are smooth to the touch and no longer have sharp edges.