Okay, as a fellow Cauldron DM, I'm going to give you this gentle advice.

SKIP.

THAT.

$HIT.

Trust me, it's easier to just move on to the next canon adventure. Personally, I'd salvage the goblins for later, but for right now, that section of the book is just padding.

Also, you will go here and RPGenius. Look for stuff by Delvesdeep; he's practically the god of Shackled City.