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Author Message   Dgillette4 Tinkerer Username: Dgillette4 Post Number: 24 Registered: 04-2007 Rating: N/A Votes: 0 Posted on Friday, April 27, 2007 - 12:00 pm:    Hi Roadwarrior: THis triangle I believe is the stop down lever for the apeature of the lense you are using. If you are brave you , see if you can retie a spring or straighten a lever to fix it. also the preview dof. is connected there also, lets hope you can access something from the bottom if not to remove the mirror box is a more detailed job. But with what srt101s go for maybe here or on photo.net you may find one. Good luck..Don