checked up under my 30 ft motorhome and noticed the leafsprings are shaped more like a snake rather than your traditional curve you see on autos .it is 14 years old and parked most of its life with only 14000 mi . on it . im wondering if they need to be replaced ? i recently had a brake line replaced . it was on the axle . im wondering if the axle may have bumped into the body. to cause this unusual spot to go bad in the rear brakeline . im also wondering what kind of money to replace those leaf springs ?