I've been trying out some Kodalith that I scored recently for stupidly cheap in 20x24" (only $40, if there's 50 sheets in it then it works out to 3c per 4x5 if I cut it up).
Been trying a few clip tests, hardest part was working out which side the emulsion was (found an answer on an old thread here eventually).
Shot the first at ei1.5 in a rodinal 1+200 (5ml+1L) stand for 2 hours. I didn't invert, only stirred at the beginning and at 1 hour (mod54 in a paterson tank). It was really dark and had a few streaks because I didn't mix it enough (and marks where the film was held, because it was loaded backwards).
Next one at ei1.5 (exposed correct-side-out) and same dev was still a bit dark.
Latest at ei6 worked out pretty well, inversions at the start and 45mins, 1:30 all up (because it was late and I was getting impatient).
It's a bitch to scan though, there's pinholes all through it so it mucks with the scanner's lightmetering thingy. Not a massive loss, as the intention is to shoot 20x24 pinholes (maybe 12x20 panos if I can find a lens) and contact print.