in the process of trading in my Seamaster Planet Ocean chrono, the buyer had a watchmaker (Omega certified shop) look at it. The amplitude of the movement was below 200. I bought the watch 2 years ago, just off warranty. I spoke with him, and he told me that the watches with the coaxial escapement need lubrication much more often than other Omegas, and that for the low amplitude he needed to do a complete overhaul, and "replace some parts to bring it up to current Omega specs. Any thoughts from you who know a lot more than I do?