I have come to the conclusion that this is nothing if they where all recorded in mono and each instrument was recorded in different takes, at different times and are all mono tracks or different tracks recorded at the same time. You are not dealing with phase.
Your thinking too much into it and letting a plugin and not your ears tell you what sounds good and what doesn't... If the tracks sound normal, then proceed to do what ever you want to do with these track.
If you are hearing something that is off and you think its a phase issue, then its definitely not a Phase issue as they are all mono tracks recorded at different times. You might be confusing Phase with a thin sounding, poorly recorded track or something.
You have a better chance of winning Power-ball and getting struck buy lighting at the same exact time then you do if you recorded 2 different takes at different times and there are phasing eachother or 2 different instruments at the same time.......
CJ