I've found this small pdf from Easton very useful and it may give you a better idea of what's going on, sometimes it's diffcult to 'get your head around' the daftest things so please post any question you like. If we could all learn everything by simply downloading things then we wouldn't need this forum eh?
http://home.att.net/~sajackson/tuning_guide.pdf
I wouldn't bother with paper tuning bit for a recurve though