Warrantied the two worst ones, new batch has no balancing marks, I will put them on the balancer and see whats up. I looked at several on the shelf at the local parts stores, none had balancing marks. I’m real sure they are falsely claiming to balance these rotors. One of them even had a poor...
I just purchased a set of four of these rotors, none of them having any mill balancing marks. They do not balance out well, one in particular is noticeably out of balance, on that rotor you can tell the machining is not centered with the casting (fins and inner hat out of round significantly)...