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Hi, does anyone know an easy way to re-calibrate a Valjoux 7750 automatic chronograph (without opening up the case of the watch) using the crown and pushers? Right now, when I press the chrono re-set button at the 4 o'clock position, the sweep chrono hand resets to another place on the dial far away from the 12 o'clock position. I know that quartz chronos can easily be re-calibrated without opening up the watch, but is there a way that automatic chronos can similarly be re-set. I am not confident with my skills at opening up a watch case myself because I have never done it before. Thanks!
 
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