So I finally have my "new" F2K working correctly except for one issue. The lower left slingshot does not work. While inspecting it I found this diode on the switch stack. I thought it might be loose and not soldered completely. You can see it in this picture:
Now, if I touch that diode even very slightly with my finger, it immediately causes the coil for the slingshot to fire. I found this out while checking to see if it was loose. For awhile, I left it alone and just played the game with the sling not working but then the coil started firing intermittently all by itself without a ball being anywhere near it. Don't want to screw anything up, so I'm hoping someone can give me guidance regarding this. Is it soldered incorrectly?