I installed the new lens last night, and today I did some first-light cuttings through the new lens.
I cut two kerf gauges, one out of 1/16" chip-board (cardstock), one out of scrap 1/4" ply. The kerf are much improved from before the new lens.
The kerf in the chipboard is 0.002", and in the plywood it’s 0.004". I will put this info and the power settings on the Wiki soon.
I am leaving the PDF for the kerf gauge, as well as the two I printed out, on the laser cutter laptop.