character animation question

wright0768

I have a character that when you move him a propeller on him goes from a 90 degree angle to 0 degrees. The problem is when you lift the left or right keys thus stopping the character, the propeller stays at 0 degrees but I want this piece to go back up to 90 degrees. I sort of solved the problem by adding just another rule where if the right/left key is UP it runs the animation to bring the propeller back to 90 degrees, however now when I preview this it runs this animations right when you test it because no keys are being pressed when you start. After that it runs as I would like. Can anyone point me in the right direction in solving this problem?