I guess at some point I'll do it anyway so no point in waiting, right?     This is a work in progress tutorial on how I set up an xml file using JFF v4,   I will try to explain this stuff using penis collisions and freely dangling testicles as an example.   What do we need if we want to add HDT PE physics/collisions to a Skyrim character/creature? Basically only 4 things, Nifscope 1.1.3 (newer versions will work too ... probably),  JFF 4.0 (both files!), the sk