The sizing of the custom cell HEADER.spice I used before (in s8) is defined as

w=0.70 l=0.50

, while the extracted version is

w=700000u l=500000u

, I think that is the cause of the mismatch. The same thing happens in the SLC.spice (another custom cell). I have modified the sizing to match with magic's output, I also changed tran's name from

mMN0

to

xMn0

. Now these mismatch issues are gone.