Sambo # said..
Good to know I don't need to buy a carbon fuse when I switch to carbon.
From what I understand, you will still need to buy a new fuse when switching from all to carbon, since the mast-fuse connection is different (flat with 3 screws for the carbon masts, 3D shape with 2 screws for alu masts). They only changed the material of the fuses that go with the carbon mast, and now have two different and incompatible types of alu fuses.