Hi all
I hope some one can help me as i am new to this. I would like to know how to up date things like ( user name cjennin ) M set and S set carriage as to have the ones done. The B set doors open and passengers hope on and off but for the following dont (M set, S set and the nswgr interburban control & trailer by ad602000 ) dont do that & would would like to know how i can or if the people how made them can do it.

Thank you