Been looking at this same angle overhead photos the recently and they always suggest the same, but it seems to be getting more evident. I am sure that Beshine gets the same volume added to each with every fill-up, and yet there was the unexplained 300ml difference in 2011 though there was no noticeable visual difference. Makes me wonder if there is a tiny leak in the fill valve as I am watching the difference get more noticeable and I would suggest it may well be 2000ml difference now. The reason I use this screen shot from the recent video is that making comparisons from other angles leaves too many variables; the background is irrelevant, the camera being closer to one than the other would be. I did not use a measure of projection because that would be subjective, especially with tops obscuring the chest wall, but this picture is perhaps the first time that there seems to be a clear difference. What I did measure is width; the right is 9.45% smaller than the left. I did the same for two photo sets apparently taken in 2018 and found the difference to be between 4.1 & 4.25%. Making the same comparison of photos from 2017, I found no discernable difference.