Looks goooood...
Question, maybe because I work on a smaller scale then you that I got this problem. I adjusted the rabbet in my second attempt. Because first I made on perfect looking, but that wouldn't hold the planks in the rabbet. The problem was that planks came out and there was a small gap. It happens when more rows where mounted. Now I make the rabbet deeper, so the full plank fits in. You don't see the difference when everything is in place. My planks are 1,85 to 1,95 mm. thick and the rabbet is about 1,8 mm. deep and wide.