The other pic shows how I've used two wedges which are off-cuts from when splicing billets. By using 2 wedges point to point as a spacer you can adjust the thickness of the spacer whilst keeping the faces of the spacer parallel.
I've unclamped it now and the string line is better, It's just inside the grip now where it was on the edge of it before, mind, that's not to say it won't get more attention at some point. If a jobs worth doing, it's worth doing right, even if it takes 4 attempts! here's a pic of the natural reflex too.
I've also been shooting a few bows to see which I fancy taking to the Aurora shoot on Sunday... it looks like Twister has claimed his place!