I recently bought an expensive prescription mask (unfortunately they didn’t support my usual mask for the lens swap). Tried it dry and it felt great, and even short dives are ok but after an hour it starts to progressively leak more and more, quite odd. Frustrating on those long shore dives to the point I had given up and gone back to my old mask. I will also try some of these tricks in the hopes of salvaging that investment. Thanks for sharing.