Yuri Blanarovich wrote:

Maybe there are cases when things don't play as figured? Maybe would be of
interest for software author to find out, and if there is a glichand to find
the way to accomodate it? Have you figured out how to model loading coil of
particular inductance and physical size to reflect the real current drop across
it?
Experts said one time that she's flat.

EZNEC v. 4.0 has a convenient helix creation feature, which allows the
user to quickly make a wire model of an inductor. An inductor modeled in
this way will show a current distribution very close to that of a real
inductor. There are two cautions, however. One is that EZNEC programs
prior to v. 4.0.7 had a bug that would create incorrectly sized wire
(when creating a helix or loop) if wire diameter was specified as AWG
rather than numerical diameter. So be sure to update your program to the
latest version by downloading and installing the latest update from
http://eznec.com/ez40updates. (You've said you don't read the manual, so
you probably aren't aware of these free updates.) The second caution is
that turns should ideally be spaced at least several wire diameters
apart. I have, however, seen good results with spacings down to one wire
diameter. At that spacing, though, EZNEC will overestimate the Q
somewhat (that is, underestimate the loss) because it doesn't account
for proximity effect.

. . .

Roy Lewallen, W7EL