Tweezing out flaws of little known tracks by little known bands is a huge part of what happens at the steve hoffman forum.
https://forums.stevehoffman.tv/forums/music-corner.2/ And many who post in this section are no slouches with discerning the causes and suggesting fixes for less than great recordings.
https://forums.stevehoffman.tv/forums/audio-hardware.5/
But searching for solutions to the very problem you've apparently now fixed with this software is why I'm very happy to be here at this thread. I'm often suspected that many of my favorite-and even some of the otherwise best engineered-stereo recordings in my CD collection sound smeared, out of balance, full orchestrations on some late 60s A & M recordings (e.g. Dave Grusin) where spacial placement of instruments and vocals may not appear well even through speakers with excellent imaging ability and/or lack sufficient low end because the channels are inverted and/or time delayed.
A friend gifted me a license for Izotope Advanced 5 and an early version of Samplitude Pro X but I've yet to rummage through their tools to see if either of them could fix this same problem as completely and quickly as Delta Wave or another plugin could.
Any new software upgrades and/or other ways which might more accurately and quickly identify and (automatically??) correct these defects in stereo recordings?