Woah, took me a while. Sorry you got a bad experience but to my eyes it's as good a pack as my 2016 self could muster.
Given the super low interest in this pack it's just not viable for me to go and fix it in detail.
I uploaded a _2021 version with the source files flattened, but with corrected contrasts and transparencies inside the sources. Unfortunately re-exporting the layers is not going to happen. Doesn't sound like it will fix your particular issues, but it's the best I can do given my current time constraints.
Good luck and thanks for the support :)