Ok, tore back into it today... and am trying to track down the noise. No, I didn't check for piston slap yet, (got a bit too eager) but I did have a question. This is fairly new territory for me, but I was curious. When you're at TDC, and your 1,2,5,7 are "open" so that you can fit your feeler gauge in between the rocker and the lobe... should the exhaust rockers that are open have any "play" in them, or should they be seated firmly against the valve stem?
Like in the following:
...Where the arrow is pointing, do any of you know if there should there be any play there?