So, I went ahead and did my own modification. took a hacksaw to the factory knob and removed the end section. Used the thread adaptor mentioned above after drilling and tapping into the remaining section of the handle.
It will now take any aftermarket bolt knob threaded in 5/16" 24 (which is most of them). Turned out great using just hand tools in my garage, Makes bolt movement easier and gives more leverage. I plan on getting the bolt assembly Cerakoted as the black factory finish wears very quickly and looks kinda nasty.