Thank you for pointing that out. Never noticed that it is missing a set of rings, and will work on updating the render. I will say that it is not Beez Stew either. as there is no extra row between the two "halves". You can tell because the halves are still offset from each other.The images here is wrong. It shows byz stew, not Flat byz 4 in 1 tube.
to me, that extra row you speak about is not needed. I view any number of such rows as reducable, it's still e4. I will call still call the image above beez stew.