I finally stumbled on something wholly new:
In acoustics there is a choice ear mold that now includes vents of diameter 0.6-0.8mm and it is even the recommended** setting for me. I was always bothered that I couldn’t get smaller vents for my custom molds. Rather detest occluded, but don’t really like to have such a large hole drilled into them as needed before to get within choice range. (Thanks @Dani for making me look at acoustics again!).
As I had chosen slim tips, I do not know whether this was an error or whether ear molds is newly added, too. Does anyone remember/know what was available in Target 5.x?
** The diameter choice not the ear molds. The recommended choice would be power dome, but I can never get beyond that itchy phase with those: Tried for weeks!