I got a Konica Hexanon 52mm f1.8 basically for free. It had fungus inside so took it apart to clean it out. Man, what a chore to get it back together without any dust on the elements! How do you do it? Finally, the very last two elements of the lens are hooked together inside of this cone thing. Does anyone know how to get them apart? Right now there is water in them because I boiled it thinking the heat would help me unscrew them but it didn't help. This is not a life or death matter but it would still be fun to put this together and have a 52mm as opposed to a 50 for those times when I need that little bit more FL. Thanks!