well if hes shooting a 26 inch draw length (my cheetah drew longer than the mods indicate) he can get away with a 25 inch aarow and be fine for a 400 spline. for a 27 inch aarow in 400 spine he would need to shoot 125grain points or be underweight with most aarows, and spine is good to the 70# range i think with that short of an aarow.
2010 rytera x. apache rest, truglo 5pin. 8in shockbocker 1000 stabilizer. norway g2 string tamer Huch-n-Son strings
2010 rytera z apache carbon rest axt primal x5 sight