CharacterController resetting to defaults in Standalone?

So I set a basic class called Player that simply extends the Character class and as all Character classes do, the player class inherits my CharacterMovement. The strange thing that happens though is that when I change the default values in the Details panel, (I changed Max Walk Speed to 300 and Jump Z Velocity to 700) it works when I play the game in editor. Yet when I play it in standalone mode or in a packaged form the values get set back to their defaults of 600 and 420 respectively. In addition, if in my player constructor script I change the values manually, it works fine its just the defaults. Is this a bug or am I missing something?

Thanks a ton!