I have checked up a litle on what "quench" is.
There is something which is still not clear to me.

How do you actually meassure the distance from the flat spot of the cyl.head to the piston flat spot with the head gasket compressed.?? (Cyl. head installed)
Is there a factor of a compressed gasket to use.

How will you be able to meassure a tolerance of 0,04, the flat spot in the head is actually not completely flat.

As I understand it, pistons are supplied with a standard quench and according to that milling of cyl.head must take place to obtain the ideal 0.04
Or is it milling of the piston.

Of course I will like to have the highest compression but absolutely without troubles on pump gas.
I would like to avoid any milling.
As I read it, it seems to me that KB 190 needs milling but KB 107 or TRW speed pro do not.

Please correct me if I am all wrong.