On the subject of not breaking good triggers, the attached photo was made a couple of days ago to illustrate another idea if one needs to be disassembled. Take up the slack between the sear and the inside of the trigger with a feeler gauge. Greasing it before doing this may help in getting it out if it tightens up after the pin is removed. Using a small or miniature arbor press would be better than tapping it out with a punch or drift.

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