I don't have, nor have I seen, a David panel so I don't know how it should go together but I do have an idea to check. Again, your pictures make it hard to see, but something looks off. To me it looks like the panel on the left has its dots farther away then the one on the right. You could measure from the intersection to check if they are different or the same. If they are different then I would suggest to butt the panels up to each other rather than having them meet at their interesting edges (as you have them in your pictures). I attached picture to hopefully show you what I mean. Hope this helps. Good luck.

- Panel Help 1.png (5.11 KiB) Viewed 5071 times

- Panel Help 2.png (6.96 KiB) Viewed 5071 times