I had a shock today when I put on my infrequently worn Moon watch and noticed that the bezel is missing. I haven't worn my pride and joy in a couple of months and am very careful with it and have no recollection of knocking or hitting it against anything. I baby this watch. How could this happen? I can't find the bezel so I really have no idea how or when it happened. I found this part number on Ofrei at http://www.ofrei.com/page663.htmlat Part number OME-082SU1589. Is this the right part? How difficult is it to install? I am stressing big time over this. Help please.