I also had my first go at lith printing today. I found a package of Kodalith Super from way back (1982, or something like that), mixed it and tried a couple of papers.
I did test strips, developed in dektol to get a benchmark for exposure.
Over-exposed three steps for the lith print. Developer 1+1+8.
First paper; Agfa Brovira BN112. Not what I expected. Maybe because the paper was around 35-40 years old. Very "peppery" mid-tones and shadows. Cool putty like highlights. Much longer developing times than I were expecting -- 15-20 minutes.
Second paper; Kodak Elite Art, around 20 years old. Much smoother mid tones. warmer, pinkish highlights. Pleasantly easy to work with, but also very long developing times. At the end of the session, with dying developer I was pushing 30 minutes for the last print.
Tomorrow I will do another session, this time with more concentrated developer. I'm thinking 1+1+6(water)+6(old brown) and try another package of the Brovira, in case the first one was wonky in some way.
By that time my first prints will be dry and flat and ready to scan for you to see.
This is fun
-- MW