Hey Slaughtie
what you must do is to shape the inner ring of the Rep Rubber Bezel 0,5mm bigger...
That would be 0,45mm or so... That you must measure again if you have the Rep Bezel.
Then the GEN Crystal Fit into the Rep Bezel.
But the GEN Crystal is much thicker, but this you know
so it could be that you must do one of two things.
1. Use the Rep Rubber Gasket for the Bezel
or
2. If you have the GEN as I have you must shape the Rubber a little
if you don't do, the crystal won't lay down on the Tachy... I saw many Franken where exactley this is wrong.
On gen there is no play btw Tachy and Crystal... The Crystal lay soft on the Tachy...
So let Domi shape the inside of the Rep Bezel and all is fine