i think i got lucky with mine cos like i said i just jigged the screw a bit and the whole thing jst fell out. obviously the person who put it in didn't fasten properly cos i it was already loose.
have to say it does start first time now but it cranks for a good few seconds before it comes to life, is this normal?
its also easier if you unclip all the wires to give you space to get your hand in there.
good luck with yours james (you are by the way going to get a creak in your neck after this though) :wink: