Agreed that I think you have a really solid core here. The FSDD device is interesting, the initial mystery is intriguing, and the locations ooze charm.
There’s a lot of info to digest here, but page 2 does a good job summarizing the backstory for the GM. That being said, I think there’s still a lot of details here. If anything you may benefit from cutting some locations for the pamphlet but you may also have enough to expand this into a larger zine/adventure if you flesh these out even further. For example the Hydro and Finkel’s Noodles are great locations that add to the gang dynamics and vibe, but may not be necessary for the core mystery. There’s even a whole chase scene and associated mechanic here that could be added on to!
Other polish item would just be some extra editing to catch some minor items.
Also wanted to note that I like the “Why are the Players Getting Involved?” options as it makes it easier to hook players. Once they’re hooked, I’m sure the vibe and the mystery will continue to draw them in.
Overall I think the module could use some polish, but this is a fun concept that could even be expanded upon as a several-session side adventure!