A question about HF mating - would the use of H290 instead of H295 allow less padding of the Delta due to less CD pull-up required?

Discontinuity in the horn flare will probably rule out the 10CX in this application now that I think about it. If I had one I'd try it anyway though.

Once again, thanks for sharing your designs. Simple = Elegant, especially when the engineering is sound (no pun intended).

John