Just want to make a note if anyone is searching this thread for solutions on fixing things that go wrong:
(1) The ramp was struggling to go up and down. When we lifted up the playfield and looked at the mechanisms that interlock with one another, they were not perpendicular with one-another. It turns out one of the housings bent either over time or when someone carelessly put the playfield down/back another time (probably me). Works just fine now.
(2) The ball locking mechanism near the 3 switches was releasing all three balls instead of one at a time, which was a huge issue when on multiplayer. Cleaning the coil sleeve and arm and adding a second spring to fixed the issue.