I have a 2005 F40TLRD that had bad gas in it. I flushed the old gas out, cleaned out the carbs, drilled out the brass plug to expose the air/fuel mixture screw to clean and inspect that area and reset the screw to the same location. I think I cleaned every orifice in the carb. However, I can't get this thing to idle. It seams OK mid range and high end although I haven't water tested it. Is there a jet that I am missing or can't be reached? I have tried reading blogs on this motor and I am getting the impression there is something that I am missing? Is anyone familiar?