Just spent the last 2.5 hours using the Mint Best Tractor.
Pulled my TT from my rack and setup on a large table to have plenty of room and extra lighting.
Good lighting is key with this product.
Setup is straight forward, go through TT setup just to double check everything then follow instructions for the tractor.
Mint recommends taking breaks often which I also recommend.
A very tidious tool but if you are patient and step away often you will be rewarded.
The 10x lupe is a must.
I found that following Clearaudio's cart alignment instructions yielded a perfectly aligned cart verified with the Mint tractor.
For me peace of mind was worth the cost of the tractor.
Here are a few pics.