I pinched the lines like you suggested and didn't feel wetness or smell diesel. I soaked the fuel up with a paper towel and started the car and fuel came out where the text is engraved on the injector, shown below.




It appears like the fuel is coming out where I marked it orange (click to enlarge it), but I can't really see it well. Is this something that I can adjust? The return lines seem cheap enough to replace anyway, so I'll definitely do that.