For the D2 CF shaft replacement, maybe design a round holed adapter that works as a clamp. To be installed at shaft’s end. Hopefully a far less expensive part to R&R. Especially since the round shafts in CF are widely available.
Welcome aboard. Thank you for your service.
I'm just setting up my new Deus 2 and it’s a very nice upgrade to the D1.
The new D2 seems robust and logical to navigate. Best of luck!