Yea them nylon ones don't like heat well. You would think you don't have to go behind someone to check their work but then again that's the ethic of people nowadays..When I discovered the problem and got it seated I realized how that mistake was made. It felt like the tangs were bent because they didn't all engage at the same time with a nice, solid click as they did with the feed. Plus the lines weren't held solidly in place on the rail. I shut the car down, pulled the fire bottle, and that was that for the fire under the hood. Now the stupid nylon lines that melted through under the car weren't done making a mess. I ended up getting line repair bits from Napa, a fire extinguisher, and racing the next day. Really sucked because I had just repainted the engine bay, it still has a bunch of soot in there from the fire.