If CRM (contact info above) is still working, he machines the entire cone off the gear, and makes a new one. You can see my description of his procedure in the thread above….
Like Doug says, I saw no way to get the cone off the gear…
Ron McCall / Dennis Quella also has a repair procedure they have used successfully on many second gears…
…or you can try to buy a gear and synchro from RBT…
My ZF is still going strong!
Rocky