I hope someone can help me out. I ran out of Co2 today and went to swap my tanks over same as I always do. Screwed on the reg and gradually turned it on but no matter what I do co2 gushes from the tiny vent hole in the bottom of the reg next to the thread. Any ideas before I end up wasting a whole tank trying to figure it out. I’ve checked the solenoid and the bubble counter was bubbling so it’s not something to do with that.