Got one from Coz. Started whining after a very short time. Sent it back and got a replacement. Then that one started whining after a short time too. Then i just gave up. Couldnt spendt 600 $ on shipping on new boxes like that. One of then had redline om ut and then other one had OEM oil.
Then explanation i read from Coz later on was that there was a bad batch from the factory. But its been years so if its still happening i call BS on that one. Maybe they are just shitty bearings