Please refer to http://rick_oleson.tripod.com/index-161.html for reference.
I'm try to clean my aperture blades as they do not close down anymore. How do I get that top section off? For the life of my I can't get it off. I assumed where it said "use rubber pad wrench" i assume that its a threaded part but I can't get that darn thing off. Any advice as to I do not have a rubber pad wrench. Thanks.