Ann: Results of Meeting, page-57

I'd say yes. It looks like there are now 4 corner connections and 8 flexors connecting the square membrane to the base layers. At least thats what the images in the last AGM presentation imply. Images 12-13 show the forms of these as well as the minimal deviations of the surface from the overall displacement graph. If you compare this to images 8-15 the May 26 2020 Tech Presentation which showed several views of the circular membrane with 3 flexors - and a whole lot of distortions that it was plagued by - there has clearly been a heap of work done, and it has clearly been done very successfully.