-The problem with the low HEV position should be manageable by controlling the QC pics before confirming the order. But is it posible to replace the too big HEV by a gen one with the correct size?
Yes, it's possible to replace it, but it's not a direct swap, the same with the crown. For example, to replace the crown you have to buy the gen crown and tube and do a little mod to make them fit because the drilled hole in the case is too big for the gen tube. I don't know the details about the He Valve, but i think it may be similar, probably someone else has donde it and can help you with that.
-Is it possible to replace the bezel by a genuine one in order fix that notorious "pearl problem", or does the rep differ in size so that a gen bezel wouldn't fit?
Rep and gen bezel have different size, they're not a direct swap. Modding needed. The easier option to fix this is to get one with centered pearl, then mask everythin but the pearl and sand the pearl carefully, i have a couple photos of the modding result. I'l post them when i get home.
Please clarify for me what you are stating about the clasp: The clasp should include the word PROFESSIONAL in small plain caps. The AR should be clear. Is that what you are stating? If so, this is accurate, at least as with my gen.
You are 100% right. Let me explain.
The old Po version has blue AR and
NO "professional" engraved in the clasp.
The newer PO version has clear AR and "professional" engraved in the clasp, just like the gen model i assume you have.
The problem with the rep is that it's a combination of both versions, (Blue Ar and Professional engraved), and omega never produced such combination. I am nitpicking here, but after all, it's a flaw.
The gen you have is the one that should be repped, beautiful watch.