My guess is still the mouthpiece...a small tear at one of the corners near the ziptie.So to update. Followed advise to wet diaphragm before putting on faceplate. This partially helped and breathing was less wet.
I really focused on testing what could be causing the wet breathing.
Slow controlled breaths are mostly dry. If I do quick/harsh breaths it is far more wet. I was able to replicate this consistently. So something is causing water to enter when I try to pull a lot of air quickly.