Dec 1 2019, 1:03am
I confused Gundabad with Moria.
Oops! I made a mistake of my own.
I've always assumed that Thror wanted to reclaim
Gundabad Khazad-dûm because of the loss of Erebor. it's curious that he might have attempted it before the coming of the dragon (which in Peter Jackson's timeline might have been around T.A. 2820). I've estimated that the Battle of Moria in the films might have taken place about the year 2829, definitely after the coming of Smaug.
I'm still hoping that you'll post the rest of your tale, even if it needs a slight re-write.
(This post was edited by Otaku-sempai on Dec 1 2019, 1:06am)