I found this
For every .010 taken off the head surface if you would have .0123 taken off the intake side of the head you wouldn't have to touch the intake.
now lets say i shave the intake.
.0123 x 4= .0492 off the intake
Is that .0246 off each side or .0492 off each side of the intake
Or my other option is making my own gasket out of really thin material.