so IN FACT you DO NOT use SODE??? This explains the situation
Like all our our sceneries that have SODE jetways, KLAX *DOES* use SODE jetways, but they are not like other developer sceneries, which are created with an external XML file.
Our jetways are still driven and animated by SODE, but are slightly different, with a bit more parameters, to better integrate with the passenger animations and the GSX editor, and they are not created by an XML, but from a GSX .INI profile, which is supplied in the KLAX scenery folder.
That's why you need GSX L2 (which is free there).