I'm not going to get into an argument but all I will say is that I had already dismantled and reassembled the bottom bracket a couple of times, tried all possible positions for two different chainrings on the spider, tried the Sheldon bolt loosening trick and none of that had made any difference. In my case there was still paint on the outer surfaces of the bottom bracket shell so I had it refaced, reassembled everything and now it's fine.