I recently acquired a Bell & Howell Foton camera outfit. The questions I'd like to ask here are 1) does the base plate readily come off and if so how does one do this, 2) do the take-up and rewind knobs readily come off and if so how does one go about doing this, and 3) the rangefinder drive wheel is locked in a fixed position. What could the cause of this and how does one go about remedying this? Worthwhile and pertinent comments and suggestions are most welcome, though not nonsense, offbeat or extraneous ones. Please just focus on the questions!