Don't do it unless, you understand it thoroughly. Again it's the
multilayer stack-up that complicates things for example:
diel diel diel diel diel
L1 - 5.0 - L2 -14.0 - L3 - 5.0 - L4 - 5.0 - L5 - 5.0 - L6 flipped
L6 - 5.0 - L5 - 14.0 - L4 - 5.0 - L3 - 5.0 - L2 - 5.0 - L1 flopped
you can see that the dielectric spacing between layers 2 & 3 in the
flipped version is 14 mils but the flopped version it's 5 mils. I hope
this explains it
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