IF never used, then improper anti-skate is not the cause.
Aluminum, an alloy, can straighten itself, but not beryllium, that stuff is a shatter waiting to happen.
It’s possible it was made near perfectly, and if never used as seller says, something pressed on the package during storage to cause this, and thus the suspension may re-align itself.
I’ve written the seller, it’s rare, tempting, but it’s the NOS Stylus that is what is desired, so if the suspension stays deformed,
I could misalign the body, and align the cantilever, supposedly start with equal forces both sides, but that would be correcting for misalignment,
lets see what response I get.