Hurst V-gate repair advice needed

I don’t believe I can get a larger diameter threaded area out of it. The stick goes from round to flat just below the old threads. I’ll be lucky if I can get the same 3/8 threads on it again.
I did find a replacement stick on eBay but I think I want to try and repair the old one first. Taking an inch or so off the end wouldn’t be a bad thing anyway. Shorten the throw a whisker while getting the grip down lower closer to the trigger.
Not sure about how hard the stick is, guess the machine shop will figure that out.
HURST V Vertical Gate 4 Speed Shifter 4118156 CHROME MAIN Stick / Handle NEW | eBay