I think the prerunners must have had some hiccups in some. I have two pairs with no issues other than me running thru pins like hot cakes. New predators are the shit tho!!
I never liked mine. I'm really liking the Straitline Amps with longer set screws as pins! I've had some big rock impacts and they still look new!
I have heard there was some kind of problem with the axles or something? I cannot remember the problem, but apparently it is recommended to wait for the next version to come out.