Thanks, it definitely got me several steps forward! I was able to record several of the "problematic" trees, and find their corresponding MODL filenames in xEdit. I was even able to pull up a Nif of one, but to my untrained eyes, it doesn't really seem to resemble either the in-game tree model or the in-game billboard for the tree, so I'm not exactly sure what to take away from that... The TES5Edit_log.txt I opened didn't have any ".dds" filenames in it, so I just searched my mod files for the same tree FormID to find the .dds files. From that, it seems like the game is correctly displaying the billboards from Skyrim Flora Overhaul, which is what I want, but for whatever reason the actual in-game tree models don't match the billboards provided by the Vurt SFO Billboards file. Here is an image gallery of all I found out for that particular tree. Oddly, for that particular tree, in xEdit when looking up the FormID for the full model of the tree, it lists both Skyrim.esm and SFO - Expanded Diversity.esm (from Skyrim Flora Overhaul), even though that tree does display the Vurt SFO LOD Billboards, not the Vanilla Skyrim LOD Billboards. However, the other 4 types of problematic trees I looked up in xEdit only show Skyrim.esm alone, so I'm not sure what to think. Would the conclusion be that some other mod is altering the in-game tree models to no longer match the supplied LOD Billboards?