This is just an update to a post I made a couple of years ago. At that time I found a watchmaker in the UK who is quite happy to service reps. His name is Chris Heal and his website is:- info@chealwatch.com he's based in kent.
He has serviced two 2836 movements for me over the past few years. Last year I bought the latest addition, the Baselworld 2017 Seadweller with 2824 movement. All was OK for about 10 months until it showed the usual signs of slowing down too much, a usual sign of lack of lubrication which even my genuine waches display after about 5/6 years. I therefore sent the whole watch off to Chris , who serviced it, checked it all over for other possible faults and sent it back to me in France. Total cost, inc post, was £80, which I consider very good indeed. Time taken , inc post, was about 4 weeks. So, if you live in the UK, or somewhere close in Europe like me, this may come in handy for some of you if things go wrong.Hope this is helpful.