Wait a bit. During this year all tanks should be modernized with 3d tracks. Some are rebuild with the last update but not updated here on the site. But it means that Мастер Моделей has to rebuild his import script for the new function with the tracks. I hope he will find the solution to do so soon.
I uploadet some 3d tracks for some tanks. Look in the forum. May be there are some of the tracks you need.