I understand how to ADD controls when customizing track headers, but I can't seem to REMOVE them. Yes I can RESET but still leaves controls I don't want (like the VO recording button, and next/last keyframe). I want to remove nearly all the controls. I don't need them! And they make the track header area take almost a quarter of the screen. I want to maximize the horizontal space that the actual tracks take. It would be great to actually toggle on and off the track headers themselves - but I don't see a way of doing that.