Went to change brakes 2day...only got to driver's side. First of all, only one brake drum had worn down......the other one was almost brand new. Now that I've changed the brakes on that side I can't get the drum to fit over the brakes. Both sides of the cylinder looks to be all the way in on both sides. Looks like it might be hitting the compressed bearing that's in the wheel. Is this normal? What can the problem be why it won't go on?? Thanks.