I have a PD-6WCL that has been successfully installed with (3) with dimmable LEDs for over a year. Overnight they failed. Correctly working yesterday and today all they do is strobe over and over again. Nothing changed in the installation. I don't believe this is a "compatibility" issue as they have been working for +12 Months. Also, if I replace any of the 3 lamps with a different LED lamp they work correctly. If I remove 1 or 2, they continue to strobe. I can interchange the lamps, but as long as I replace one, the strobing goes away. I have checked the fixture wiring and the switch wiring, and all remains fully connected as was originally installed. Assistance. Thanks,