I just bought a new bmx and i a newbie so i dont know the terms. I have a problem from my gyro brakes down. It twists very easily so the handle barz go unaligned from the wheel. i am not sure if its a bolt or a screw that needs to be tightened so if any1 that can tell me if it needs to be tightened can u also tell me where the screw would be?? thx alot.