The busted non-drive side crank is now in the past for the Bianchi. As usual Velocity Co-Op came through with a timely and appropriate part. The original Campy Mirage crank set had 175mm arms and the available donor had 170mm... Luckily I was able to swap both side crank arms as the 'new' Campy Veloce crank was also set up as a triple. One surprise to overcome was that the new set had a narrower 'tread', or 'q-factor' which resulted in the small chain ring rubbing the chain stay... a new, wider spindle.
Not a completely smooth change out but successful in the end. I got two excellent commutes in on the Bianchi last week and I'm looking forward to doing a longer trip, unloaded, in the future.