AP RO Chrono

[sueno213]

I purchased a RO 39 mm chrono in white gold. Maybe you can help. After I stop chrono within minutes the watch stops working. I have to shake watch to start. Took to my watchmaker, his dx: one of the coupling wheels was broken. He said it was a F Piguet movement that was also used by Omega. He could order the part from AP for $600 or Omega for $140. What should I do? All this is on to of the $1200 service. I love the watch, its a keeper, but if I do sell do I disclose this? Your thoughts please. Sorry I am not good at reference numbers