I have visited or communicated with over 30 syrup producers in Missouri, most of them hobbyists, some in the business of selling. They all are willing to share information about their practices, some even have an "open house" during their production. I encourage all syrupmakers to regularly post reports and questions about Missouri syrupmaking on the Facebook site called Missouri Maple Syrup, administered by James Brochtrup of the Festus MO area. His site is serving as a great online "community" and network opportunity. Through his website you may be able to find someone who has spare supplies, or learn about upcoming meetings or seminars.
If you have questions about syrupmaking, email me at kcwyks atsign gmail.com. I will try to respond promptly.
If there is sufficient interest, a syrupmaker association will be formed and have a website with a list of members and their contact and location information. I get occasional inquiries from farmers markets or restaurants looking for Missouri syrup, and I post those requests on the facebook site mentioned above.