Hello. For some years I have owned and considered repairing a seiko 7t27-7a20 chronograph (time works, chronograph didn't) but found the price prohibitive.
I have recently found that shiojiri or Epson movements can replace the 7t27, specifically the ym57a movement. I wondered if anyone had pursued this, or if anyone has a broken 7t27 if they would be interested in splitting shipping costs on movements. How much it how difficult is it to switch a quartz movement?