My TJ60TLESM acts like it is running out of fuel at high RPM. I was going to install a fuel pressure gage in the out going line from the VRO. I noticed that the line from the VRO is either 5/16 or 1/4 inch. It conects to a 90 or elbow at the bottom of fuel line manifold. The elbow is 5/16 or 1/4...