Ok guys, need your help - round two on head gasket. Last fall, I finished up a restoration on dad"s Oliver 770 (gas). Ran it for an hour, re-torqued head, and still had antifreeze seeping externally at the head/block seam. Ran it a few hours more and the leak never got better. Parked it for the winter and now back at it. Checked the crankcase and had no antifreeze in the oil after sitting! Still seeping externally only when warm. Pulled the head and here are pics of the top of the gasket and the head. The gasket is a Fel-Pro with the number 7411 on it. Block and head where fully worked over at the machine shop. The pistons are M&W high domes (M&W Number AP-81 with a 3 9/16" bore) that where in the tractor and where it like new shape so we just installed new rings and honed the sleeves. Nothing looked terribly wrong to me on the head gasket but im not an expert. Was it the correct gasket? Should I just put a new one it and see? Planning to use new head bolts (grade 5 or grade 8 ??) and use the Permatex copper spray (one or both sides of new gasket)? Anything else other than the usual of checking sleeve protrusion, clean holes in block, oil threads on bolts, and re-torque when warm? Sorry for the long post - thanks!