AT ART-9 vs Audio Note IQ3

That bites. What to do?

If there's no cosmetic damage, install and play it. If it sounds good, then nothing to worry about.

If it was an ebay purchase, you are well protected for damage. I’d plug ’n play. If it doesn’t work right, return it. If it does work right, photo the inside of the box to document the problem and contact the seller with a request for a token discount for the visible wear and tear.

The same thing happened to mine when ordered from LP Gear in NV. 

Must be poor QC in the AT factory when mounting the cartridge within the case.  I notified LP Gear who instructed me to try the cartridge which I did without any issues.

I bought mine from LP Gear as well.  Mine came well packed with zero issues.  Just letting people know that shipping issues are random.  I agree with others; try the cart to see if it plays well.