Cylinder head leak

[Rusty_Nail]

Just installed this high compression head and it's leaking from the corner circled. The head bolts are torqued down as much as I can get them without stripping anything out, but it still leaks after I go for a ride. What can I try to fix this? It has a copper head gasket too.

 

[wrench]

I know the head is new But... Check the head deck and cyl deck for flatness

Rub the head and cyl deck on sand paper and plate glass to ensure they're flat

Tip: mark up the sealing surfaces with a black sharpie pen
When the sharpie marks are sanded off you know it's flat

BTW head bolt torque is 12 ft lbs

Anneal copper head gasket and reuse it