DB, the PDF below shows the effects I see here by changing the segment count by a significant amount in a model. It just so happens that I used the Auto Segment feature in Eznec to demonstrate the effects, but this is not the problem...the problem is a model with too few segments being used is no-way-no going to be accurate.
You will also note that the length of the segments gets longer as the segment count gets smaller. I knew that segments were important and I figured this is likely what happens, but I didn't know it was this dramatic. When the segments vary substantially the currents are dramatically changed, and we can also see the change in the Antenna View as well. Just compare the red lines (the currents).
With this said, we don't see this much skewing when the matcher I added is missing from the models like I posted earlier with no matcher attached just to be clear.
So, I'm not too sure we should ever add a physical match to a model, else we risk the model breaking if we make a change in segments and maybe other settings will have similar effects as well.
What I ask you to do is confirm if this happens when you use the mathematical matching feature that comes with your 4Nec2? I don't know how to use the feature in Eznec or else I would check this out.
With these models compared to the previous models without the physical matcher added to the model...I hope I'm making my point on this clear for you. This has nothing to do with your use of the Auto Segmentation in 4Nec2 unless it is assigning to few segments...but looking at your new wires description that shows the accurate # of wires...I don't think you have any problem.
This is not a big deal, but maybe something to consider in our modeling.
