Some of the rivets in the rear spar for the vertical stabilizer are "tipped", and the working theory is that 1/8" rivets are too much for a 4" yoke on the squeezer, so the yoke is flexing. So I installed a smaller yoke, drilled our about 15 rivets, and replaced them. Some of them twice. (That's the "you shouldn't do this on a Friday night" effect.)
The photo below shows one of these rivets. This particular one is waiting for my attention tomorrow. So not done -- more of this drill and replace coming up...
Time: 1 Hour
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