[tim.anderson (Tim Anderson)]

I recently bought a William Optics 2" diagonal second-hand. The eyepiece side of the diagonal appears to have come loose and is now rotating in whatever fitting holds it. It does not appear to screw in, but simply rotates in place.

Does anyone know how to fix this problem? Do I have to disassemble the diagonal and glue the eyepiece holder to prevent it moving. If so, what type of glue would be best to use?