Custom Filemaker Pro DB Troubleshooting (Print Scripts)

I have a client with a custom FM Pro database using FM Pro Server v9 and workstation v9. When updating to version 10 or 11 as well as using the newest iMac 27" with older versions, we are experiencing some very odd printing issues. After much troubleshooting, we have determined we are likely dealing with some scripts for printing in FM Pro. Behavior is we print multiple pages and some pages drop off from the job and when printing the same document again, it reduces the number of pages each time. The previous FM Pro developer who created this database is available via email and phone in San Diego, CA but is not talented/motivated enough to troubleshoot this issue. We would like to upgrade to version 11 and resolve the print script issues. We prefer to select a developer for a long term permanent status to resolve all of our FM Pro needs now and in the future.