Bruce Dickinson says, "More Throttle"
I'm using a wedge arrangement to hold the throttle into the handlebar. After building that, I cut the right side of the bar to a slightly less than arbitrary length and it fit with little fuss. The bolt securing the wedge is center drilled and chamfered so the throttle cable will easily pass through. Here is the brazed wedge, throttle inner shaft(with brazed-in plug), and bolt: I'll have to drill the bars for the cable sleeve to exit and mount it all up. Here's what it'll look like from the rider's view: