Hi guys, may be this question has already been answered but I cannot find any information on the forum. I own a non running el primero movement and I want it to be serviced in Europe. The stem is missing, my local watch maker tells me that I need to send it directly to Zenith cause the parts are hard to get. He told me I can expect a bill of 2000 swiss francs. Hence my question: is there a recommended watch maker in Europe for servicing my watch ? Thanks for your help guys !