I don't know what happened! on my computer speakers it's fine and I didn't check it with headphones 'cause I didn't think about it being an issue. Someone else mentioned this and I checked with headphones and it is so bad. I'm sorry!
unfortunately shortly after part 4 I had a two week work trip and it destroyed my momentum on it. I lost motivation to keep going and after a month I started workin on it some but talked myself out of it 'cause at this point it was 6 weeks which was too big of a gap. I do have the the majority of ep 5 in my head and it would be the ending of what was originally going to be a "first arc" kind of thing, but it's just been so long I don't think it'll happen.