Cherry's work is fantastic, I like the one comment "and she's a girl too".
I've watched a lot of Keith's videos, he is a master and I'll be going back to rewatch the videos on timing.
Here's a pic showing the difference between a standard 4-40 nut (right) and the BA nut (left) that came with the kit. The 3/16 hex stock I have is only about .015 larger than the BA so I don't think any one would notice and I can make matching bolts where needed.
I'm not even sure the standard 4-40 nut will fit in a couple of the tighter spaces.
BTW - A 3/16 5C hex collet from Hardinge was going to be $167cdn so I ordered the $65cdn one from Amazon and it came in today. Some of the reviews said the collet was small and they needed pliers to get the stock in/out. This one seems to be fine, it's snug but can still be adjusted by hand. Now comes the fun part, making a nut.