well all valves are unstuck and moving up and down thanks to marvels mystery oil . well anyway all the carbon build up was what i got off with a soaked gas rag and heres what the valves and cylinders looked like when i took the head off and a pic of the back of the heads on top of all the dome piston tops read 0.60 so been bored and i even see where the block had 3 cracks in it around the valve to the top of the cylinders on 3 and u can see where the machine shop repaired it so all and all looking at everything this looks to be like a great engine so far .