HI. As I found the old sprinter to be very well modeled and accurate I found it was quite a shame to see it had an electric door, the sound in my opinion being awful. I don't think I have the time/skills to do the modelling for the rail but just make the animation last less so my custom sounds can fit into it. I haven't found a line for animaiton time or similar so that's why i'm coming and posting this.
Best regards.
