I damaged my ONEWAY live center a few weeks back and finally got around you repairing it this morning! I placed a split pin in the “locking hole” and then installed the live center in the headstock. A few minutes of turning and filling and I’m back in business.
For more pictures and a full explanation check out the article on my site, DIY Repair, ONEWAY Live Center.
-- www.woodshopmike.com, www.woodshopmikestudio.etsy.com