Any other guys having issues with the rear rotor. I have already been through a set of pads and have some new ones arriving tomorrow but the rotor looks like crap. It has a well defined grove where the pads rub, like the metal is weak or soft or something. I have never seen anything like it before. I thought I read somewhere about someone else having issues with the 2 stroke rotors. I would advise everyone to have a have a look at theirs. Just wanted to get some more feedback before I contacted ambeta. Sure seems like a potential defect to me.