[sgqwonkian]

I suspect your problem is actually with the mantle_gar quest. During the preenc stage, mantle_gar checks, Page 1 sees that you don't have babulon's mantle, and it makes the garthans your enemy.

The fix is to alter mantle_gar so that once the Garthans think you're Babulon, they'll always be your friend. Takes a bit of their personality away, but it solves your issue.

By the way, the non-homeworld quest occurring twice is probably because the game checks your quest and makes them friendly, then checks the mantle and makes them enemies, then for some reason checks your quest again.

That's my 2 cents.