chain slack

[max]

Interesting about the brake assembly, that was the first thing i wondered about a picture that Dave sent me;
what about the brake alignment if the wheel is not straight?

Sure they can slide sideways but what about the release return of the pistons?
I guess over time the pads would wear in and adapt to the new working angle, you could measure the thickness of the pads and confirm either way, but it's a good point and not obvious initially.