Hi Derek, thank you for sharing such a detailed and positive review! We're glad to hear you're enjoying the Cyclosys. I apologize for the difficulty centering the rear brake caliper, your feedback on the brake adjustment is valuable, and I assure you we will check into the location of the slots as they relate to the hub axle.
On my personal bikes, I use a tri-wrench in the shop and make sure I can remove the axles with a multi tool on the trail, but with some effort. I don't know what the axle torque is, but it's what I am comfortable with.
We're here if you need any further assistance.
Thank you for the support,
David Turner