REAR ROTOR EBC rotor help :(

[nissansp]

Okie so a few weeks ago when i picked up my car the dealer changed all brakes I notice a few days later that one rotor in the rear had grooves in it.. A few days later the other rear had the same. So i didnt think to much of it and ordered EBC rear sport rotors they come gold plated I installed them myself without issue..

No noice at all breaks great heres the drive side since they were gold u see the scrapping and then look silver where the brakes meets the rotor





if you notice the rotors looks perfect great contact good scrapping all now herees the issues with the passenger side





As you can see there is still gold left on the outer side of the rotors theres maybee about 70 or so miles on these rotors now i believe i took the tire off break looks flat touching all 4 corners looked fine.. Whats even more confusing the other side of the rotors Same rotor is scrapping fine i checked that when i had the tire off... hmm soo confusing any ideas???

Thanks