OK, so it always bugged me that the top of the Dawnstar Lighthouse wasn't visible at a distance - not a very useful lighthouse if you don't see it until you've collided with it. So I set out to do a simple plugin that gave the top full LOD. While I was at it, I decided to add a storey and make it seem a little more grand. So, I load up and see that 1) the base remains visible, and now the top is visible also. 2) My new middle is not visible until you get very close up, leaving the top mysteriously hovering. So, I go in, make sure that the middle parts, which are mostly identical to the base parts, have full LOD ticked on. I check again with a clean save, and discover that the middle is still not visible at a distance, and also not visible close up! I can still climb on it and bump into it, but it just won't appear.
I know there's some bugginess with LOD, but anyone have any advice on what to try to get the middle layer to appear?