Hello maniacs! Is anybody able to give me a tip how to remove top cover of Fujica ST 601 .I do not know how to get off the knob which is for settings ASA and speed ( round one between winder and prism )It is unlike at model ST605 where on top of a knob is small screw ...Here is a mystery. Would apreciate any good advice . Emai direct to ; grace2@aapt.net.au