Thanks for the replies. I just double-checked: With the same setup the power domes work like they should and the custom molds don’t. I guess that the only sensible thing is to make other molds and hope that it won’t repeat.
Still think it is odd. The differences between the measured threshold feedbacks between the custom molds/slim tips and the power domes don’t seem to be larger than the differences between left and right. The only thing I can think of is that the results just don’t fit with their modelling.
( I expect the high values for the right ear lower frequencies are a measurement error. Haven’t seen such high values before and I am not seeing them with medium power domes.)
Still, the low values for the low frequecies do seem to imply that both the custom molds and the left power dome leak too much low frequency sound. And that is something that I also saw repeated in the AudiogramDirect: Hearing treshold was lower for the lowest frequency.
After I changed the left ear power dome to medium, the lower frequecies raised their values. The line at the higher frequencies was raised, too. Now it doesn’t come close to the G50 anymore.
Too bad, I won’t last for half an hour with medium power domes, though. They are already quite uncomfortable. Itching will probably start quick.