I have read nuts n bolts of archery. Decided to try tiller tuning my z28. Was talking to my local trusted shop and he told me to tiller tune bow using 1/8 turns on limb bolts. As I understood it tiller tune was with twists on cables. Can someone steer me in right direction? I understand changes from factory specs that twists in cables/string bring but what's the advantage/ disadvantage of using limb bts? Found my groups got wider but sight pattern seemed tighter, as in pin float.