You may want to speak with city officials in St. charles and find out how the zoning was modified in that town and address the possible modifications with the West Chicago city officials.
Posting some flyers may help some but you need to reach a broader audience to gain support.
I would like to help you.
What have you done so far?
Have you contacted other towns that have changed the ordinance?
Could you let me know where your at in the process?