I would avoid rubber line at all cost or be real fast with a fire extinguisher. I had that braided 'race car' line on the Monte Carlo SS years ago. Sometimes, over time and vibration, the blue fitting and red fittings get loose. Try tightening up EASY on the fitttings where they join. Braided line is double braided inside and out. The chance of the line being bad is slim compared to a loose connection somewhere and judging by those pics, you have a few places there could be a loose one.