backwards part on neckbreaker

I recently Just got Neckbreaker in to day and every thing looked fine until i tried to transform him. One of the hydraulic piston things for the central shovel has been put in backwards so that the arm panels do not have the clearance make up the front.
I can find a way to unscrew them so i can fix them myself.
any help would be appreciated.
I can find a way to unscrew them so i can fix them myself.
any help would be appreciated.