All right, session four down. This time I went in six weeks after the last session. Settings were increased to 3.1, then reduced to 2.8. I actually bled a bit at the session and have quite a few small blisters already. This one seemed to show a lot more progress. I will likely wait 12 or more weeks before the next session.
the first images are progress from the third session.
the gory ones are four hours after my fourth session.