I stuck the cushion back where it should be and went ahead and cleaned some parts that might cause issues in the future. I’ve fixed all my original problems, but I may have caused a new one. The sound quality through headphones has decreased–I think it has also decreased when playing through the internal speakers, but I’m not totally sure, as it’s kind of difficult to discern all the nuances of the sound through them, so I’m not sure whether this is a headphone jack issue, or a computer issue. It’s not a major downgrade, but it’s slightly annoying hearing the sound being slightly muffled when playing with good headphones.
I’d like to know your thoughts, but I’m happy with fixing the issues that I originally set out to fix–it plays like new now!