Modified ControlScript overrun by the default one?

hello,

i modified the core ControlScript to block movement by pressing W (this is used to make the player jump instead) and S, but if i put my CameraScript in the StarterPlayerScripts (it doesn't run anywhere else iirc) the player can move with the S key, W still only makes the player jump, so that's fine... it feels like it's partly overran by the default script.

can anyone help me fix this, please?