In that calculator Tom, you have to enter the deck number as a "-, or minus" value since the piston sticks up above the deck surface. Once you re-calculate, it comes out to 10.67 using that calculator. Also where many calculators have an error is in the head gasket portion of their formulas. And if it only asks generically for the gasket thickness, it will not be accurate. More accurate formulas need to also ask the head gasket volume and gasket bore size.
