Releveled engi, cant change specialization?

So i leveled engi to 200, chose goblin but changed my mind when i was on the show your work part. I abandoned the quest and dropped engineering entirely and releveled to 200 but im not being offered a choice for specialization from the npc in undercity anymore? instead the goblin for the show your work is still offering that quest so what do i need to do to get gnomish engi?