I have checked your PreWing component:
There is no Al layers / void gaps between PreWings and premoderators (marked in the drawing below).
It's a single water container. Our engineers have a mockup of it - come and check it.
I agree that there must be some clearance between Butterfly and premoderators, but then it should surround the moderator. It does not divide premoderators.
Hi Stuart,
I have checked your PreWing component: There is no Al layers / void gaps between PreWings and premoderators (marked in the drawing below). It's a single water container. Our engineers have a mockup of it - come and check it. I agree that there must be some clearance between Butterfly and premoderators, but then it should surround the moderator. It does not divide premoderators.