Player 1 Port Not Working?

Hey! So I bought this N64 on eBay knowing that the first port didn't work. It looks like someone dumped their juice box or something into the first port because it's all corroded. I gave everything a good scrub and an isopropyl bath. I've soldered the controller port and it seems to be working for player 2 (as it always did) but player 1 STILL won't function. It seems to be getting continuity and 3.3v as far as I can tell. Any help would be appreciated.