<p>My Voigtländer LTM lenses are all upside down on my NEX-6.</p> <p>I have the M39 to NEX adapter but I think there are other models that have the same disorientation problem. The adapter has two parts, the outer black base that mounts on the camera and the inner metal ring with the female 39 mm thread...<br> <img src="http://ecx.images-amazon.com/images/I/41uPl0Xz5yL.jpg" alt="" width="500" height="500" /><br> There are four set screw (small grub screws) that hold the inner ring in place. User comments on Amazon say that these can be loosened and the ring repositioned. But I don't know what tool does this. In my sample a tiny flat-head or Phillips screwdriver is certainly wrong. A truly tiny Allen wrench (1 mm ?) might do it but my smallest is 1.5 mm.</p> <p>Does anyone know the correct tool?</p>