yeah i've been arguing with Rad CSR's for two weeks over this. They keep pushing me to buy their garbage lights. I spelled it out for them and also reminded them that their faulty lights have been faulty since 2016 and they haven't improved them at all. they didn't have much to say about that. i got a senior engineer on the line once and he said to use this special glue to cap it off. I may just buy another light from a different manufacturer. Seems a lot of Rad's parts fail pretty quickly....