I think my .gltf looks the same as on the viewer. But I have a lot of problems with the .tilt viewer. As you can see in that example... There are holes in the face. The smoke also doesn't look 100% right. I remember it was first broken because of measurements problems. I also found a brush file in this discord (not sure if it's all of them) which I just used to test and a lot of brushes seem to work with a few that are broken but I'll try to fix those later...