I was able to get Screaming Perfection on Dantoine; which was bugged last go around. I hit every single major jump, went through every hoop (Including turning around at the split portion to go through the other side), and finished with the bonus timer. I was surprised when it popped. I was not able to get the Beks or Razor perfection achievements on Dant, to my knowledge they are still bugged.

Yep; same issue here. Was able to get the Perfection achievements for both Onderon and Tat; but not getting any of them for Dantooine.