[Nick]

I havn't opened the other packet of screws and hinge pins. However, it looks like the front ones are longer than the rear.

I think they got them the wrong way round and the longer hinge pins need to be used at the rear.

I will try it tomorrow and reply back (11:30pm abit late). Maybe you can look at others ones you have in stock to see if the front have longer hinge pins than the back? Would confirm it for me then.