This is the first Rollei I've handled. I can't get the exposure wheels to turn. Do you have to have film in to do that? The camera came from KEH and everything is suppose to be working. Also, which position is the shutter release lock suppose to be in, to lock the shutter? It doesn't matter if I push the release lever down and under the lens, or up to the side of the lens, the shutter still trips. The shutter release doesn't automatically spring back up after I push it down. It stays down or sluggishly returns (comes out). Is this normal? I've read through a manual I found for the camera online, but it wasn't a whole lot of help for my questions. Thanks for any help.