I think that you mean the LOUD sounds. If Connexx software is like ReSound’s, there is the odd feature that the gain table below the fitting graph, the rows run from soft to medium to loud but in the fitting graph, it’s the reverse. Soft sounds are lowest, medium higher, and loud highest. And if like ReSound’s the solid red line (right ear) or solid blue-green line (left ear for Connexx-ReSound uses a solid red line for both ears) is the MPO with the given receiver power.
I agree that AllanH should have his audi do an active feedback test. That’s what I’ve had done with my domes and molds and the results clearly show the domes in my ears don’t seal well, the molds do and as Scotty_G says, virtually no feedback problems since getting custom-fitted molds and wearing them with occlusive venting (which I’ve chosen for other reasons).
The following graphics illustrate reduction in feedback zones on switching to molds (graph on right) with the lighter gray areas coming down from the top of the graph being areas with the potential for feedback if amplification enters those regions. Self Fitting Resound Quattro 9s - #2 by jim_lewis
The following post has fitting graphs and gain tables for ReSound illustrating that the relative order of soft, medium, loud is reversed in presentation between the two depictions. The solid red line at the top of each graph is the MPO (maximum power output) the receiver is capable of at a given frequency: One Provider's View on the A, B, C's of Fitting and Dealing with Basic Fit Problems - #10 by jim_lewis