dave,

i measured it and it goes exactly to the screw hole and not a mm further.

How do i work the inside of this area? When i stick my eye up to the hole in the wing to look down it, it seems like there is foam or something blocking the rod from going the rest of the way through. is this what you are talking about??

Because looking down into it, i dont see any kind of screw or metal object blocking the path :/