Fighter craft unable to increase/decrease thrust

[Kami]

I have a bug where my space fighters won't increase or decrease thrust at all with page up/down. I can fly up and down, side to side, and rotate, but there's no way to increase thrust. It's like the page up and page down buttons have stopped working. I'm having no luck figuring out why this is happening yet

[Rockinsince87]

I have a bug where my space fighters won't increase or decrease thrust at all with page up/down. I can fly up and down, side to side, and rotate, but there's no way to increase thrust. It's like the page up and page down buttons have stopped working. I'm having no luck figuring out why this is happening yet

Very strange. I fly fighters all the time, no issues. 

Check your controls. You could see if they are mapped correctly or hit restore defaults for kicks. Also do you have a joystick/gamepad hooked up? Sometimes that can cause conflicts with the keyboard inputs. Worse comes to worse, purge the games files from the steam directory and re-install.