AEA .357 Help

I need help with this gun. First the cocking lever is spinning freely counterclockwise & clockwise, is there any way to tighten it? And I don't mean the plastic knob I mean the whole post. The pictures I took is of knob and a screw in the cocker, Is that the screw that tighten to stop it from turning?
Second question how do I turn this folding buttstock so that it folds on the opposite side?
 
Pictures

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Thank you, Okay got the cocking liver tight. Now on to the stock. When I screw it out do I have to worry about any air or anything in the tank anything shooting back at me? ( the gun is fully charged). I saw a video were a guy powered it up by unscrewing the base nut the stock and all by unscrewing there's a spring a Rod in there he added washers to to Power It Up, basically my question is can I mess anything up?