I flashed my sammy drive about 3 weeks ago, works great. But for some odd reason its now making some sort of grinding sound when the disc slows down from 12x speed. And that goes for all my discs, originals and backups. I look at the discs to see if its scratching them, but its not. All discs read fine, its just that sound that worries me.

is your console standing up or laying down I'm not sure whether this will fix but i had a console that made that noise when it was laying down but when standing up it was find idk just a suggestion

Yeah I tried that, did it both ways.