ORIGINAL: doxilia
These later and lighter fuses were even more flexy than the original WK made fuses. I have a Tipo with a fuse just like that and it is quite flexy.
This is something that Don might be able to easily fix when laying them up - either by introducing a former or, better yet, some CF where needed.
David
The flex in parts has more to do with the resins used than anything else.
The higher the HDT of the resin the stiffer the part in most cases, there are also other things that come into play but the resin is the key.