while replacing the cam cover gaskets on a 1991 560SEL, noticed the two fuel lines crossing the right (driver's side) cam cover appeared to be old. i've decided to remove them and have the rubber portion replaced. one of the lines goes from the fuel distributor on top of the engine, changes to about 18" of rubber hose and then connects to a steel line which then runs underneath the vehicle. is it possible to take a screw driver and remove the rubber hose from the steel line without damaging the steel line? then, if that is possible I want to take the line to a high pressure hose shop and replace the rubber portion for both.