Head gasket replacement - slight water leak at the front right corner?

Ok having replaced the gaskets and heads, torqued to specs in 3 rounds in pattern shown. Problem being a slight water leak at the front right corner of the front head 1, 3, 5. Heads were shaved.008 and.005 respectively. No visible sign of a cracked block. Suggestions? What if anything can I do about this? Is there a thicker head gasket to use or possibly different material. Anything other than having the block milled? I mean I would hate to stop now after putting this much money and time into it. Thanks in advance for your time, it's much appreciated.