[DanEC]

Installed the Fel Pro gaskets today and thought I figured things out at first. I found that the last time I put the no. 1 header pipe on, it slipped in on top of the header bolt washer rather than under it. So the washer was trapped between the head and the header preventing a good gasket seal. Everything is black under there so until I hit it with a light it wasn't evident. Self-induced error and explains the large carbon tracks on the lower side of the gasket on that cylinder. Took care of most of the noticeable tick but it still have a lot of what seems to be valve train rattle. May be time to check with the builder and see what they think.