Also make sure that there is no excess pressure, or pulling on the injector with the wire connection feeding it. I tried to make the wire harness "pretty" on mine, tucking it out of sight, but gave up, because 1 or 2 injectors leaked every time because the harness would pull the injector off center and outta line. Let the wires "relax" in their place, and you'll be good.

85 4Runner - With NEW Marlin 4.7 Gears!! It's a whole new beast!