We just migrated to CF2016 and I'm not sure how using the API to load the PDF Service Manager. Not finding examples of how to do this. In CF9 this was configured through the Cold Fusion Administrator app.
Have you tried asking over in the ColdFusion forum?
The only reason I ask is because the Coding Corner has been mainly crickets as of late. You might get your question in front of more eyes over there.
Retrieving data ...