I've seen Blacksmith of Mammon change the type of R110-grade helmets, gloves and boots. Impressive, but he can't change type of upper and bottom armor.
I can. I'm able to modify upper and bottom R110-grade armor.
But there is one little detail. I modify at least enhanced Leviathan upper and bottom armor.
Oh, there is one more thing you have to know. If you've changed the appearance of your armor, the effect will be removed, so be careful.
Take all the other equipment except upper and bottom armor to Blacksmith of Mammon. I appreciate business integrity.
So, do you want to give it a shot?