I had originally planned on using the TC Bros forward controls, brake pivot and linkage kit for my build, however have decided to stick to mid mounts for now.
I did however decide to utilise the linkage kit for the bike.
This struck it's own problem, especially considering how I was going to attach the rod end to the brake arm upon the rear hub.
I think I've come up with a pretty elegant solution that will work well and look good.
I simply found a shouldered bolt (Allan head) that was the correct diameter to fit within the lever. I had a thread machined into the bolt, and there you have it!