First of all, I apologize posting this support request in the wrong section, but, when I notice,I wasn't able to move it in the right place. Thanks to you for your replay. Sorry but I don't understand what you mean. I roughly know how els works regarding the extra parts but this prob occurs even whit els turned off. In fact, I guessed the prob is els, just because only an els enabled car does that. Maybe you mean that I should break the association of an extra part(eg left door) with that corresponding light stage command? And, if I correctly understood and if you mean so, where have I to apply this change? In the xml file of a els car?.. I apologize for everything, I do it also for my English wich isn't my native Language!