I'm interested in getting a friend's Leica Minilux w/ 40mm 2.4 lens. However, when I tested it, the lens won't retract fully when the camera is switched off. There are no more digits on the LCD display so I think it's off, but the lens stops short of going in the body, thus preventing the lens cover from covering it. My friend showed me a trick to fully retract the lens. He would turn the battery cap at the bottom of the camera half-way open then close it fully. By doing this, he can retract the lens fully. I'm now having second thoughts in getting his camera because of this glitch. I don't want to always turn off the camera by turning the battery cap. Does anyone know how to overcome this? Would this be repairable? <p> Also, does the Bulb function on the Minilux work like a toggle switch, or do I have to hold it down to keep the shutter open?