If you take the heel throw off your AXLs there is a thin “line” that the throw sits in that is a fail point. Check it every 25 days or so and if you see a crack order a new heel throw before it fails. This is the only issue I’ve found w AXLs. That and don’t over tighten the throw as that small piece the hex screw sits in will crack. That won’t leave you stranded though.
I also had to rebuild the cabling channel underfoot but I bought that pair used so I can’t take credit for breaking the plastic feed the cable loops through under foot. That was another mag I don’t recall who was supportive in reimbursing me for the replacement parts.