I thought I'd provide an update as I received my Mint Tractor this past weekend and used it to realign the cartridge on my Scout.
I performed the initial set-up with the VPI-provided jig. When I checked the alignment with the Mint, the null points appeared to be aligned quite well, although I did not check it with the magnifying glass that came with the Mint. With bare eyes, the stylus looked to be pretty spot on on both null points. However, the cartridge DID NOT track the arc on the Mint properly; the stylus was about 1 to 2 mm in front of the arc close to the spindle. It is apparent then that the VPI jig does an ok job, but is definitely not precise enough to provide an optimal set-up. It took me over an hour to fix the position of the cartridge so that the stylus was sitting perfectly on the line along the entire arc drawn on the Mint, checked with the magnifying glass. And that was only half of the job!
The cantilever appeared to be pretty well centered and parallel to the two reference lines on both sides of the null points. I decided not to get into perfect alignment on the null points as I ordered the VPI Classic after I had ordered the Mint Tractor and will have to do it all over again with the new table. Also, the cantilever on my Soundsmith Aida is not perfectly parallel to the sides on the cartridge's body, so even though perfectly straight, I wasn't sure a perfect alignment between the two reference lines was even possible with the cantilever. However, it looked really good all things considered.
I then went through an extensive listening session. There was no doubt the realignment improved things. The separation of instruments improved, as did the depth and width of the soundstage. Music had a snap to it that it lacked before; it simply sounded more lively and more dynamic. Now, I'm not talking a dramatic difference; I loved the sound before, but now it became more refined. I had a sense that the Aida was also tracking better as I didn't hear distortion where I heard it before on some problematic passages on certain records.
I will no doubt be buying a new Mint tractor for the Classic tonearm. Now, if anyone would like to take this one off my hands, please let me know. It's a must-have tool for a vinyl lover.