Hello all, I'm thrilled to have just aquired direct from the original owner and flawless Heuer Autavia 2446C Abercrombie and Fitch model with the first execution case. Problem is bezel popped off and I can't get it back on without fear of damaging or bending it. My watchmaker who I've been using for ages and who is great said he needed to make some grooves inside retaining ring. That scared me. Anyone know the trick to getting a bezel back on a first execution case. Any help would be appreciated.