So the new regulator works correctly, right hand threads and all. found I needed both PTFE pipe tape and liquid pipe sealant to stop it from leaking. Anyway, I now have the pressure sensor and gauge working properly. Feeding pressure and weight back to the Raspberry Pi single board computer. As well, it's displaying properly on the GUI. Cool addition, I'll get an email notification when I run low on CO2 (or beer for that matter). This is what happens when engineers get bored from COVID-19 shelter in place orders...
Thanks for the tips...