SEIKO 6138/6139 Repair Procedure of CENTER CHRONOGRAPH WHEEL  PREAMBLE: My Quest for a Repair Procedure of Seiko 6139B CENTER CHRONOGRAPH WHEEL  (PN. 888612) I have on several occasions searched for information on how to repair the infamous Seiko (6138, 6139) CENTER CHRONOGRAPH WHEEL, to no avail. Threads about the subject matter are generally sprinkled with authoritative sounding comments that they cannot be repaired. My question is why? Why can the number of parts  stacked on th