On my XL750 i have the bearing kit and the CNC Clamped toolhead.... with mixed Blazzer, RP, FC i have a plus / minus .004. RP being the swinger. if i load on a single head stamp i'm seeing plus/minus .002. of course i always have random longs or shorts considering its range brass, but that is 1 out of 20 and i usually don't mind finding longs. i just run them through the press individually and they are usually dead on.