For the Large 21 I've modified the code so that the $5 CRK stepped lanyard pin will be employed VS the more expensive MXG Gear lanyard pin. I also slightly modified the profile of the cogged back spacer reducing the projected height by about a third of what I had been machining previously. I also added a chamfer.
I can now offer a low profile smooth back spacer with a small amount of pivot end gimping...
In developing the Umnamzaan back spacer I eliminated the stock round back spacer at the heel and that has been successful. I will be doing the same with the Large 21... eliminating the stock round back spacer at the heel. By doing that I will no longer need the big swell at the heel end that creates some clearance issues with the various blade profiles. I'll be playing with that soon.
I have developed a number of new items that have just gone through prototyping however I'm still experimenting with several designs and new (for me) materials and not at the production stage for anything as yet.