If you're talking about what I think you are, you would have to wait until each fails and reassemble using CA or another adhesive, or... knowing they are faulty, pop them apart before they fail and perform said fix. I have had two Berea Sierras separate on me, both were in my possession, the black enamel section came off of the coupling/decorative ring. I put medium CA on them and neither has failed since. Side note, I've never had a finial twist version do this... which is the main reason I compiled the list I posted a few days ago.