The heads still have the valves in them, using gun cleaning brushes and now using Scotchbrite pad for finishing. Cotton swabs and engine degreaser for those hard to reach areas. They are looking pretty good now, not ready for the concourse but looking good. The heads I'm cleaning were sold to me are supposed to have only 6K miles on them and judging by the amount of carbon build up on the valves etc. that looks about right. As they are from a '81 model they certainly have the "bad" valve seats. The heads they are replacing are 83' model and have about 150K miles on them. They had run out of valve adjustment and appear to be warped. Should I try to remove the carbon deposits on the valves and the dome of the heads? If so, how is this done? Thanks!