After a session, come in to your pit and throw a gauge on it, see what psi you have. Should be somewhere around the hot setting. For track day novice it does not have to be exact. Again depends on a whole lot of variables. Track surface, track temp, ambient temp, how much braking and accelerating you were doing, how fast you were pushing it, how many laps out, suspension set up, and on and on. My last td at ECR I set mine in the morning at the cold temp set, and every time I ended a session my pressure was right in the area it should have been. That day I never had to add or let out air. I had a different experience at TWS, there I seemed to be bleeding off a few pounds after some of the sessions. It will always vary, but again track day, not racing, novice level, you shouldn't run into any problems.