Had the exact same issue with my setup on my 75" Sony, clean the area where the holder is to be placed with IPA and then use some low temperature hot glue to affix the holder, you may need to do this for every light strip holder, I did mine a few months ago and have not had any issues since. Good luck.

Had the exact same issue with my setup on my 75" Sony, clean the area where the holder is to be placed with IPA and then use some low temperature hot glue to affix the holder, you may need to do this for every light strip holder, I did mine a few months ago and have not had any issues since. Good luck.