NEC-LIST:discrepancy between 2 programs

Working on matching a short dipole operating at 7.15 MHz to a 50 ohm source.
I have a smith chart program that is supposes to help calculate matching
sections and NEC. First, I entered the ant. into NEC with no loads and got
the input Z, 13.5-j175. Entered that into the smith chart program and
calculated a shunt L, series L that would produce a match. Came up with 8uH
shunt and 7.5uH series. Entered these into NEC and got 102.5 -J185. Worked
with the loads in NEC until I got a match there, 11uH shunt and 6.7uH
series. Using these numbers in the smith chart program and got 32.3+J31.4.
What could I be doing wrong? NEC file that produces a match listed below.
Thanks.

CE
GW 1 3 0 0 0 0 0 6 .5
GW 2 10 0 0 6 0 0 280 .5
GW 3 1 0 0 6 0 4 6 .5
GW 4 3 0 4 6 0 4 0 .5
GS 0 0 .02540
GE 1
GN 1
EX 0 4 2 0 1 0
LD 0 1 2 2 0 .000011 0
LD 0 3 1 1 0 .0000067 0
FR 0 30 0 0 7 .01
RP 0 1 360 1000 89 0 1 1
EN

Peter D. Richeson
Electrical Engineer/Nuclear Survivability Specialist
(405)739-1879

"Any intelligent fool can make things bigger, more complex, and more
violent. It takes a touch of genius -- and a lot of courage to move in the
opposite direction."
                                          A. Einstein

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