One more thing I forgot to mention ius that the spec's are almost impossible to get right .What BowTech say's in the book doesn't mean that's exactly what your bow meet's ,the spec's are more of a reference than anything .I know that I am off as well by 1/8" on my Ato A and almost 1/4 on my brace according to the spec book .This is why it's important to check your bow's measurement's as soon as you get it home and document everything .Your bow might not have been exact of what the book say's every bow is different and very few are exact as the book say's .Hope this help's .I'd just try to get it close and be happy with it ,if it's shooting good then leave it before you drive yourself nut's.

nubo