Hello, I currently trying to get my 6th dimmer switch in a 3-way setting to work. I've installed 5 other ones in the house just like this in a 3 way and worked flawlessly. I followed the directions here on the advanced install guide 2-6. In location 1 is the 3 wires wired together with one tagged replaced with pico switch. On the 2nd location is where i have the dimmer switch the 2 untagged wires are tied together on 1 black wire from the dimmer and the other tagged wire to the 2nd black wire. I've confirmed that the 2 untagged wires on location 2 is the travelers and both are hot from the 1st location. The tagged wired in location 2 has no voltage. However when I turn on the switch the lights on the switch will come up briefly and when i turn it up the LEDs will light up and then shut off. Meanwhile the lights outside are flashing very fast and shutting off then intermittently flash then turn off. Heres a video of what is happening to the switch. Videohttps://imgur.com/a/d5iWy1C Advanced guide i used. https://www.casetawireless.com/docum...d%20inst.pdfIs it possible that there is a 4 way switch or another switch controlling this load that I dont know?