Just dropped off my daughter’s 2010 Cobalt at the mechanic after discovering a leak in the fuel line. The line rusted out at an attachment. He’s ordering both the feed and return lines from the dealer, he will not attempt to patch the line (I agree with him). I noticed the aftermarket fuel lines were in 3 to 4 sections each and the AC Delco (OEM) lines are 1 piece. Are the aftermarket lines in sections to make it easier for the weekend mechanic to install them?