Hey salt,
When you decarb your rosin for 15-20 minutes how much rosin are you using? My bubbles didn’t stop forming till an hour and 20 minutes into it. It was 5gs of wax. Also was holding 250-270 olive oil temps the whole time. What do you think?
I've done it for 3.5 - 18gm of rosin. I think there was moisture trapped in your rosin. That's why it took so long.