REAR WHEEL WELL U SHAPED BRACKET HOLD BRAKE ASSEMBLY AND SHOCK MAKE NOISE WHEN I HIT A BUMP RATTLES WHEN I HIT IT ON THE SIDE WITH MY HAND DO I NEED TO REPLACE BRACKET OR JUST BUSHINGS ON EAH SIDE OF BRACKET HOW DIFFICUT IS THIS JOB ,I AM AFRAID THE BOLT WILL BREAK IF I TRY TO TURN THEM