I don't think that I made my question very clear. If the cylinder heads are milled 0.040"-0.050" and the block has been decked for a zero deck height which would be around 0.012" for the kb pistons and then if they use a 0.021" thick head gasket instead of a 0.028 " thick gasket that's a total of 0.059". That has to affect the cylinder head bolts length making them to long by 0.059" is this correct?
I've decked the block on a 360 .100 and the heads .060 and used a .040 head gasket had to use grade 8 washers under the head bolts , I was afraid the bolts would be too long ,they were very close to bottom