Thanks everyone I did measure the head tonight at all four points. Before milling Honda says it starts at 1 mm or basically .040. After measuring tonight it looks like .020 has been milled from my head as my dial indicator read .020 at all four measuring points.
my question is where to measure if the block has been decked or milled? Where is or are the measuring points? there is nothing on my Z6 block that looks anything like the four measuring points on the Z6 head.
Im not familiar with any measuring points for block decking, but possibly, you might be able to spin teh engine over by hand a few times wiht oil in there, to get the oil pump to push some oil into the bearings, and you might be able to measure how deep the pistons are in the hole at TDC.
If they are at the deck surface or lower, you should be perfectly fine. If they are above the deck, then you know it has had quite a bit taken off.