Ah!
Thanks guys, yeah it was the bottom screw lol
Sorry, the instruction manual was really not very helpful and didn't mention anything about that.
I also have one other question at the moment....
The finder scope, the whole bit, seemed like it was on upside down?
I may have to take a picture tomorrow to show what I mean, but if anyone could help without it that would be good too.
The is a metal holder bit which goes on to the barrel of the scope, and then the finder slides in to that. It has a protruding piece of metal, which looked like it was supposed to stop it from falling down. But it seemed like it was upside down, so I just turned it around. And then took the actual scope part out and turned that around.
Would that be correct to do? Or was it the right way round already? Seems safer the way I have it.
EDIT: Just found a picture on Bintel which may help explain....
http://www.bintel.com.au/ImageResize...=170&width=170
I put that little crevice up the top, instead of the bottom.