Well Bunyanuterine, good on ya for the "bunyashucker". Enjoy your bunyas.
The "Bunya Nuts" book I bought from Kay Joyce has a Safety Warning:to avoid the nuts exploding when cooked in shells using a dry heat such as camp fire, cut across the tip of the nut to allow the steam to escape.
Not sure if Flora's had any problems like this dry roasting in a pan.
Commercially available Split Bunya Nuts
If you live around Brisbane:
1) Jimele (Logan area)
2) Dreamtime Kullilla-Art (Redcliffe)