Cleaning the threads helped me. I typically wipe down the 510 connection on both my atomizer and Provari between fills, but I didn't think about cleaning the threads on the end cap until researching this problem. I think dirt and oil from your fingers will build up there if you touch the threads when you swap out batteries, especially if they have any old lubricating grease on them.
I haven't heard any whining since I wiped the gunk off both ends.