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cFP-DO-401 fuses and flyback diodes

I'm using a cFP-DO-401 to control 24V valve solenoids.

 

On page 4 of the cFP-DO-401 manual it says to fuse the outputs with 1.5A fast acting fuses, which makes sense. But, rather than put an in-line fuse on each of the 16 wires, does anyone know of a fuse block or module that will plug in between the cFP-CB-1 module and the cFP backplane?

 

Also, on page 8 of the manual, it shows that the cFP-DO-401 has flyback diodes in it, but then it says NI recommends using external ones. Why are external ones needed if the cFP-DO-401 already has them?

 

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