I printed the disassembly page and it was really helpful, but I foolishly spent way too much time trying to unscrew the screws for the fire button manually, when I should've taken my electric drill out for it right away.
After removing the fire plate, I noticed the coil spring had just popped out of place. So I put it back in place, tested it, and it seems fine.
So I'm about to test it so I switch the power on and it doesn't go on.
Apparently the black battery wire disconnected during my tedious disassembly. My problem is, I can't figure out where to solder it back.
I've tried touching possible locations but nosign of life.
Now I'm bummed.