So, uh, hello! Fun fact, I still have email notifications on for topics I've posted in before (only the first one, else it'd be spammy knowing the people that resides in these areas).
To answer your question, I also doubt I'm going to help you with it. It's been way too many years since I last made sheet music and I have no clue where I actually have the original score I made. Pretty sure it was a pretty shitty arrangement to begin with (like you said in a much nicer way). Not even sure if the site even supported .pdf files when I submitted it, think it was only .mus and .mid back then.
Your best hope is probably to nag at one of the active ones to make a proper version of it!