Below is my I-10K without a matching network in the model.
I present this first PDF file, because it tends to show a very little difference in the effects of changing the segment count in models without a physical match attached.
I'm not sure how this issue, if true, will effect one of your similar models...if you add matching using the matching feature in 4Nec2.
You will see in the second PDF, which we both have modeled, how the effects of adding a physical matching device might effect results for the pattern, gain, match, etc. At least this is what I've found.
I think this will help explain the segments issue that I commented on earlier...and I was surprised at what I saw in my models where I had added a physical match.
DB, I don't think this situation has anything to do with your Automatic Segment feature.
I will add the I-10K model with a matcher included in another post, and I think you will see my models fall apart if I reduce the segment count dramatically.
This is what I was a asking for when I requested you check your models of the I-10K with and without a matcher, and let me know if you see something similar...especially the skewing that you have reported with your models.
After I saw this I had the thought that the skewing you saw might be due to a segment issue, and maybe you were using too few segments.
I wasn't thinking about segments at the time, but I was surprised at this development on my end.