So if anyone else has this id like to know.
When I am trying to aim in the tank, it's way too jumpy and flies either way up or way down.
The reason this is weird, is that usually once you get in your tank it locks the place your mouse is in and yu can only move it to the edge of the screen. In these situations, It jumps outside that locked setting and then i can no longer aim at the plane (using a mouse). Is it my mouse or....?

when the range of mouse is reached, use the keys a(left), s(down), d(right) and w(up) and the turret will move in that direction.