Used a modified screw extractor to secure inner portion of threaded fitting. This allows tightening against the custom made -12, 37 deg. external fitting. I am using Aeroquip Startlite hose which is 45% lighter than SS. braided hose. In addition this hose is covered with a Nomex outer layer for fire protection. Hopefully, this will provide a safe and leak free solution to the hoses supplied with the kit.