Sounds like you need a 5/16" pilot chuck key. I'm seeing one on Grainger's website LINK, so if you have a Grainger store nearby, they might have one in stock. That particular one says they could get it to me by Jan 2, so probably faster to Texas.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
