A newly acquired Yashica YE has a hazy viewfinder that I want to clean up. I have removed all obstacles and the top is loose, but the two round rangefinder windows protrude outside the cover and blocks the cover from being lifted upwards. Especially the left one (on the right side in the picture); it protrudes about one millimeter. I do not want to bend the metal outwards and possibly damage the cover. Is there a trick to get the cover off? This camera is very similar looking to a Leica IIf and early Zorkis, so maybe some of you have some experience to share?