Have had a leak in the power steering. Local shop has replaced many clamps on the hose, but it still leaks. They say if it keeps leaking, they will order a new power steering hose. Anyone have any idea what the problem might be? Or are they even on the right track? Any help would be great. By the way it is a local garage not a BMW service. (No warranty) keeping it cheap! Car is a 2001 330i.