Bandit Armor/Brabus Boss

[X-x-TheMayor-x-X]

I just need Bandit armor and then I unlock the plat. But I am struggling to find Cutthroat Channel which leads to this boss. I've seen some guides say that the area is a sewer area that is one of several possible dungeons on the north side of the map after saving the root mother from the chapel. Either my RNG is terrible the last 10 times I have rerolled or a recent update has moved the location of this area. Has anyone else been able to find this dungeon in another spot? Or do I just need to continue to reroll and run to this spot until I find it? I swear, my RNG is so bad in some games that the source code has to look something like:

 

<code>
  if psn.userName = "X-x-TheMayor-x-X"
  {
  	RNG_Percentage = 0.00025;
  }
  else
  {
  	RNG_Percentage = 0.25;
  }
</code>

?

[X-x-TheMayor-x-X]

I gave up on the Bandit armor after over a dozen rerolls. Stumbled upon a place called Leto's Lab which had an armor set that gave me my 10th.