Pleasee help! When i first got my bike everything would work perfectly but one day it started squeeking and over time it got worse and worse now it makes a loud squeeking sound and sometimes it will make a loud clanking sound like something just broke. Also i have pedal brakes and if i even tap them the tire will lock up and skid and stall. I took everything apart and didnt find alot of shavings or rust. Pleaseee help me i just want to ride Thanks