I'm having a problem mounting an elmarit-R 90mm version 2 lens to a Leicaflex Mk2 camera. Its the protruding-battery-cover problem with the lens ring not quite clearing the edge of the battery cover. I do not have an SL or SL2 camera for switching out the cover for use on the Mk2, but have contacted DAG to see if he has any spares available. I've also considered buying a "Parts only" SL camera for a relatively small sum, just for the battery cover, but this seems wasteful if I'm not going to use the camera. Are there some other solutions to this problem, which I anticipate may crop up again with some other second version lenses. All help appreciated!