I just got my Mint for my Classic 3 with 3D 10 arm, and spent the painstaking hour doing the proper Mint process for alignment.
Relative to the VPI jig-based positioning, the Mint moved the cart (Dynavector XX2-II) forward on the headshell by ~1.5 mm and added a teeny little twist of the body clockwise on cantilever alignment. The sound difference was definitely noticeable:
1. Better stereo separation and ’solidity’ throughout (I suspect I did not perfectly set the cantilever straight on the VPI jig against its grid lines... no doubt the Mint allows for more accuracy on this critical dimension).
2. Relaxed, utterly natural sound at the beginnings of records, but definitely more inner groove distortion on LP’s cut near the spindle, esp. on more highly modulated passages
Overall it is better I think but it is rather unfortunate as it renders some of my favorite records with songs ending a side almost unlistenable... now thinking about moving the cart body back a touch, closer to the VPI setting.
It does seems correct that the VPI jig optimizes for inner groove playback, vs Mint minimizing distortion across the record face at expense of inner groove playback.