Undoubtedly a great album, but it's often been criticized for being a bass-light mix on the original master and I tend to agree; I'm still waiting for a remaster with added bass! Incidently, this was the first post-Cliff album - it's Jason Newsted on bass.
On youtube there's a "bass remix" avaliable
I dunno if it1s simply remixing or someone actually playing the lines over, it's called And Justice For Jason IMO ;b
here's a video from Loudwire he's says two words about it: https://www.youtube.com/watch?v=fBUT8HFjZ74