A Slate Golem Named GREY

I have a quest to kill a slate golem named GREY. As far as I can see, there is only one slate golem named and his name is SLAG. No searches turn up any golems named GREY. Where oh where can GREY be found?? I find Slag and killed him at Slate Crest but it does not count. What do I have to kill to finish the quest Gold Rage 2??? If there is a golem named Grey, where do I find him? This is the third quest in a row that is messed up. Misunder on Order
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Grey is the golem on Scorpion Island. Slag and Grey are two different Golems, but despite being internally named Grey throughout all of his sections, Grey still somehow had the display name 'Slag'.

It's corrected for a fixer delta going out soon, but his location is here: https://istariareference.com/istaria...16179&showpad=