http://watchguy.co.uk/service-omega-seamaster-professional-planet-ocean-168-1665-calibre-8500/

I have just found this Blog very very informative and possibly useful if your based in the UK for servicing?
Enjoy reading and great pictures.
OmegaSean

 

Thanks for sharing. I'm always intrigued at seeing how things work. Would like to see the same for the 9300 calibre