Yeah I've read those 2 threads. It's hard to grasp, but I'll understand those fully eventually. Do need to run the script over the low poly or high poly? Also, now that you say it, my high poly does seem to be split into separate parts... They're one mesh in zBrush. I'll try exporting it again. Thanks!
1. you dont need any hard edges on this model. not every model needs to have smoothing groups. this model will actually look worse with hard edges on UV borders. 2. as mentioned above, your center verts are not merged properly and some faces require proper triangulation. you also added extra edges that are not needed for…