KENWORTH T660 WIP UPDATE

I'm done with your Mercury cabin, also the T660. I'm going to redo some definitions that I didn't understand before, how to make them work correctly, and I'll upload the update. I've also changed the 3D models of the sunshields, and the steps will also be changed.

Ya quedo con su camarote mercury tambien el T660, voy a rehacer algunas definiciones que antes no entendia como hacerlas funcionar de forma correcta y subo la actualizacion, tambien cambie ya los modelos 3D de los sunshield y se cambiaran tambien los escalones