Outstanding, Del.  Awesome tiller.  I love to see bows tiller to full circle like that.  It is so pure and shows such great craftsmanship.
Well done.
Dan
Cheers, I was indeed aiming for an arc of a circle for the tiller, I was daft enough to announce this as an aim on my blog at the start of the build. 
I've constructed a circle centred on the nocking point in paint to see if I'd made it!

I think I just about made it  

I meant to take a full draw with an arrow on it shot...but it's gone to it's new home already...dratt.
Del