Contigo Autospout Addison Questions & Answers

Hi there guys, I have a contigo autoseal 24oz bottle, which I think is a great product and the best drink bottle I've used by far. I refill my bottle about 4 times a day, with room temperature or ice cold H2o mainly, sometimes with added cordial. When I push the opening button to take a drink, around 50% of the time it 'shoots' out a large volume of water from the mouth piece, which I end up wearing down the front of my shirt most of the time. This happens regardless of the radiant or water temperature, or the time between drinks. Its even worse with a carbonated drink, and although I'm not a rocket scientist, a change in negative pressure is the cause. Can you please tell me what you think ?

Cheers

Dave Cooper