Just curious, has anybody had one of the copper crush rings from the injector get stuck down in the injector cup? Its pretty hard to tell if its in there or not but the injector on that cylinder did not have one on it. It is cylinder #5 I want to say. Passenger side 3rd from the front of the truck. Its a PITA to try and see down in there when the cup and ring are almost the same color. I am starting to think this is one of the problems with the truck running like it did. This cylinder might have been missing it.