Thank you. I see where you're coming from. We did overcome some of the problems on EF, but it's always a shame when the core design turns out to be the biggest issue; the problems that can be worked around, but not fixed. As you say, not air dominance, and I guess thet may be why that part of the system has never been simulated. We may have to wait a long time before we know what the real kill ratio is.
Fingers crossed for improvements.