When I buy new, I run a flat bar on the bases to make sure they're right....never yet had a pair that weren't...however,
I have had new skis come with edges different on each side of the same ski and or both skis needing file work to make them G-perfect.
I too am a big believer of having the skis spot on before I ski. When away skiing consective days, at end of each day skiing, I always run a diamond stone on the edges to make sure they're ready for the next days carving.
Make um right, big delight!
G