During Mechanix you can tell when dave and james are playing at the same time who's who, dave plays it the more bluesy style he does on killing is ny business and james plays it in the tighter style he did on kill em all
This is my first time hearing this and I am ashamed of myself for not seeking this out. I've been a fan for 40 years, saw them at L'Amour in 1985, I was 17.
There is a studio made original tape of it that was made. This most likely is the original and not the copies on the cassette tape in studio made tape recording. Also, you can remove a lot of stuff of clearing it up with filters nowadays.
This is easily the best thing Metallica has ever done. They were a far tighter and sharper focused musical unit with Dave Mustaine on lead guitar. I said what I said.