Digital BW, The Print

I've been printing using my C86 with the neutral Ultratone EZ set
on Kirkland Glossy paper. In comparison to traditional B&W prints,
the inks definitely have a cool cast and aren't neutral, especially
compared to Ilford Multigrade IV paper. I would like to somewhat match 
this tone, so I need like to print slightly warmer, ideally by
substituting one of the cartridges.

My question: which cartridge do you suggest I buy to match the 
neutral tone of Ilford MG IV? 

All help is greatly appreciated.

Thanks,
Mani Varadarajan