Greetings, I have a gorgeous IWC Ref 3004 with a cal 2405 quartz movement. The date has been sticking and the movement freezes from time to time, obviously time for a service. I’ve contacted IWC but I haven’t heard back yet, but I was wondering how serviceable these movements are. I know the 2405 is basically an ETA 940111. Interested to hear what you folks think.