Just had another look and I can see a lever like the one in the pics, its very small and its on the opposite side to the white lever, I could understand the long screwdriver thing because its certainly not reachable by hand!

Oh god why does everything have to be so complicated!!! Just 1 more thing the position of the small lever is somewhat in the middle so I don't know if the positions in the pics would apply!! I will try & put a pic up it might help, will prob be tomorrow tho!
Dave