Gloss Optimizer in Epson 3880

I never use the matt black in my Epson 3880. Is it possible to use the matt black slot for gloss optimizer? If so, can you please point me to instructions?

No, it is not possible because the matte black and photo black share the same print head and utilize an area where they will mix. The GO would never be clear - but rather instead would be a very dark gray matter.

Thanks Jon