funny thing is, bought the bindings from bargainboards.co.uk and it did not come with instructions etc so i looked on youtube and got instructions. i have contacted them and told them but waiting for a reply.
if you saw the screw you would understand that its a task and half for anyone to undo, the screw and washer on the outside a notched, so i tried loosening it from the inside. tried this and noticed the outside turned also. put a screw driver in at each end to try and stop one end turning but nothing.... tried numerous times and then the screw has given up.