Report "Hi guys, I have a 1986 Summilux R used on a canon 5D Mk II with an adaptor ring. Never dropped. Never abused. Here's the problem I have. Hope you can help me out. The focusing ring came loose, the exterior ring does rotate but the inner barrel doesn't. Gradually the focusing ring actually rotated the aperture ring. Now neither the focusing ring or the aperture are responding. Thanks for your help"