There are organizers from Good to Go (G2G). I have the large in my St. Louis GM. They are nice but I do like my VIP better.
http://www.g2gbags.com/pages/shop.htm
Looking at the measurements for the G2G large organizer, it seems like it would be a tight fit in your St. Louis GM. Do you find that the organizer is a little too wide (yet a bit narrow) for your GM?
Yes, I do.
This is the one I am using~
It just fits my GM and makes everything so organized~