Hey! Thank you for all the replies! I figured it out, main problems being that I mistook ahead ass in behind the target, and after I locked the position I weren't holding it down all the way, instead I stopped holding at the very end.
Still, huge thank you's for super fast replies!
One more question: Should I get a HOTAS? I'm very tempted to buy one right now, as with the hype to this game. I'm slowly but steadily learning the game.