I have yet to find anyone that sells a replacement handle. There were some on ebay, but they were actually 10/110 handles. While they fit, you lose primary extraction, so they're a no go.
I had one of mine threaded and a new knob installed. Any smith that can do a 700 knob should be able to do an Axis (doesn't mean they will though).
I'm going to try doing my next one on my own (fingers crossed).
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