oh ok Not to derail the OP thread
You meant
The bumpers rubber stick to the bezel, ok sorry, it never happened to me, but i admit they can be pretty tight when the rubber plastic age over time, i've seen that on other 34401a than mine.
Sometime it can harden quite a lot, they became dark / black grey and they kinda latch on the bezels ...
Mine are pale ''ish'' grey and they are still soft to the touch
Maybe add some talc on them ?? they wont stick ??
For the rear bezel reassembly, care must be taken to slot properly the casing into the rear bezel, and yes it may/could break if its not well inserted before screwing it