Re number 2: Chater Lea hubs are similar to Douglas hubs, and their instructions are clear: fit the hub to the frame so that the bearing cup tends to TIGHTEN as the wheel rotates about the axle.
This seems a bit counter-intuitive to me, and I had my CL hub fitted the other way, reasoning it was better for the bearing to loosen rather than tighten. Bad idea. It did loosen and jammed the hub between the fork!
Make sure the lock rings are nipped up tight and use a drop of loctite.