Hello I have a mid-1950s Omega Constellation. I recently dropped it, and now it loses around a minute day, and the winding has become a little stiff. I'd like to send it to an expert to get serviced. I had been talking to @stefan and he was my first choice, but he hasn't been on the website for about a month, so I'm not comfortable sending it to him right now just in case there's a personal matter/etc. which is making him unavailable. Can you please recommend someone to me? Worldwide is OK. I'm in Hong Kong. There are no decent watch repairers here. Thanks.