I installed a PD-6ANS switch on a multi location set up. I capped the 4-way and one of the 3-way switches. Then I installed the switch on the remaining 3-way switch. I couldn't find the advanced instructions for this switch so I wired it black to the hot line, red to the red capped the blue one and I use the white one on the remaining wire. The bulb is flickering and I don't know how to fix it. Thanks for the help.