Yesterday I set my son's Trracer up yesterday with a 13 ci Ninja and a .687 Freak insert. It was snug (I could blow the ball thru with some effort). After 90 shots the gauge still showed close to 2,000. It was in the low 80s outside.
I doubt you'd empty the thank in a game or two games for that matter. If you do you I think that you would likely have something wrong with the gun.