NEC-LIST: near magnetic field wavelength to segment length errors

All,
 
Thanks to all those who responded to my last post. I've now got 4nec2X
working on a Windows machine. And I successfully simulated my single
loop.
 
Now I want to simulate a pair of coils/loops, one with a signal source
which induces a signal in the second. I want to see the near magnetic
field for this structure and also information about the signal in the
second coil. My "end game" is to minimize the signal induced in the
second coil by coupling the coils such that the induced currents cancel.
 
The trouble is, the signal in the first coil is 125kHz (wavelength =
2.4km) and the dimensions of the structure are less than a meter, and so
I violate the rules stated in the "validate" page contained in the help
file.
 
Does this mean I cannot use NEC for my requirements? Should I be looking
at FEM programs instead of MoM?
 
Many thanks,
James.

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