Get value of roll?

Hi again people …I have yet another problem. I have a ship which i apply roll to in conjunction with movement .My problem is that the ships movement looks strange due to the ship moving left/right before the roll of the ship is tilted in that direction … What i would like to do is check if the ship is rolled sufficiently in one direction before applying movement in said direction … I.E Check that the roll to the left is at least 45 degrees before allowing the move component to kick in and the same for the right .I would also like to have the ship level itself out when the left_right axis is not activated … I am well aware that i am terrible at explaining this .But i could realy use some help guys … Please look at my bp