Another 3 way light switch only working when one switch is "on" question. I've identified the "hot" wire on the main switch (switch 1) and have that connected to the common screw (black) on the switch. I then have the two traveller wires on the other brass screws along with the ground wire hooked up. On the other switch (switch 2) I have the two traveller wires connected to the brass screws and the black light fixture wire to the common screw (black).

However, switch 2 only works when switch one is in a certain position. I've attached photos to see if that helps (first photo is "switch 1").

You can see two black wires here but the one on the far right of the screen was identified as "hot" and is connected to the "common screw" so it's not an issue of the traveler and hot being switched.