1) There has to be two dies because our wall thickness is 1.85 mm and generally the thickness should be 1.6 mm (15.6 % more), also AFAIK Marcus posted that AUS Blade has 17 kg's total weight with standing rigging.
Actually a die can wear out when it is used often. Also there is some naturally spread in wallthickness when the proces of extrusion is not carefully controlled. An offset of 15.6 % is certainly not negligiable but it is not outside of the realm of possibilities either.
It is my suspision that the die is aging and that a replacement maybe in order. But again that is my judgement of the moment on the info I hold now. It is not my final judgement yet.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
