I was unable to duplicate that problem make sure you got the latest version from post #43.
I tried the calcs:
(all with .125" lead length)
30 ga A1, 8 wraps, 2mm form = 1.794 Ohms
30 ga A1, 7 wraps, 4mm form = 2.845 Ohms
30 ga A1, 4 wraps, 4mm form = 1.703 Ohms