I recently downed my bike. I put it back together somewhat to take a practice ride around the house. And i noticed that the rotors were making a grinding sound and it almost looks like there its putting a groove in the left rotor. I was just curious of you guys opinion on this. Is it just the rotors being warped the pads or could it be worse like bent forks and something else im not thinking of. I did pull the calipers off to make sure there was no trash in there and nothing fell out no rocks or anything so i dont think its that. Thanks for any help!