Cameroo, thats a good idea with the whiteboard, you can get through a lot of paper,..Using this method will always give you exact info where the tiller is out, the most exact and simple way I've found so far.
Gut, the perry reflex is different from the R/D bow,because it has an even reflex throughout the limb, I find these more straightfoward to tiller and the R/D's I personnaly find harder to get right,
thanks Gaur, yes its pretty fast and nice and light in the hand.