Digital BW, The Print

I'm using MIS UT3D in a 2200 with QTR, and I'm noticing dots in the
highlights of my prints, and I'd like to reduce them so I'm
considering replacing the MK and LK positions with a lighter version
of the LC and MC inks (LLC and LLM) in an effort to get smoother
highlights.

How would I go about mixing this? Equal parts of GLOP and LC/LM? 2/3
GLOP to 1/3 LC/LM?

Has anybody tried this? Is it even worth the trouble?

Thanks for any input!

-Guy