Thanks Markoz I really appreciate the responses.

The problem appears to be getting weapons to load. ie; I have all the switch functionality in the weapons panel, can throw switches, the digital displays showing weapon rounds are active, even have basic HUD now (no targeting function).

I have tried cycling the shift+7 to load weapons but nothing. I guess if I don't have weapons loaded then I can't fire them. Maybe this is the problem.

Tried contacting Captain Sim support, their standard response was the question has already been answered, but a search doesn't show anything in forums or knowledge base.