This is a very good and easy to use chart for connectors. Thank you for sharing this. I'll check out the author for any more information. The thing is, after 2 days understanding the connections between equipment I realized that this chart is the same model I've discovered that works to some degree. I believe the issues are rooted much deeper. Other functionality that I haven't figured out a name for it yet.
But do you have any issues with pipe sizing? over-sized lines?