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Author Message   Polaski Tinkerer Username: Polaski Post Number: 7 Registered: 08-2006 Rating: N/A Votes: 0 Posted on Tuesday, March 13, 2007 - 05:19 am:    I just acquired a 500mm f/5.6 Century Precision Tele-Athenar lens witha t-mount for SLRs. The mount that is currrently on it is probably a Nikon t-mount. Set screws came out neatly, but the t-mount to flange threads are on VERY solidly. I am hesitant to force it, obviously. Can someone give me suggestions. The only thing I can think of it a set of flexible wrap-around wrenches (which would force it) and Liquid Wrench (which tends to spead a lot once it gets going.