I am adding an afterburner and smoke effects to all of the 4 Convair strategic bomber engine.  I have successfully done all this and lined them up with the engines in all dimensions except 1.  How do i move the after burner and smoke effects down?  They are too high right now, they don't sit in the right place behind the engine.

The gauge and the fx file are sorted.  It is the co-ordinates that are programed in the aircraft.cfg.  I can not make the ab effect move down.  It sits too high up in the wings instead of behind the engines.  I have done all the co-ordinates done except the up and down ones because i can not find these.