>I have a DK-7 stuck on my F4. That is the little threaded ring for
>attaching the right-angle finder to the F3/4.
>
>I have tried pressing it against a flat piece of rubber and turning the
>camera around, and even tying rubber band around it. Please help. TIA.
I had this happened to me once. I was using it with a DR-3 on my F5. I
managed to free it by
screwing the DR-3 back on the Dk-7 and pulling on the the combination while
unscrewing them as a unit from the camera. I think it gave more leverage.
/Isaac