Nice heavy song, good mix for the most part, where's the bass?. As in And "Justice For All" where's the bass. It would really warm things up in the right way. I sort of hear it, I audition everything on my computer speakers with sub, hearing response down to about 80-100hz. Maybe the bulk of the bass is below that, a common stumbling block. Check your mix by high passing up to there, if the bass isn't sitting well and making the statement that it needs to, try to take it there. I don't hear much midrange definition on the bass. The 700-900 range and maybe an octave above if needed are a good place to start.