Again, we'd like to thank everyone who pointed out the issues, who helped us with valuable information and who shared with us their thoughtful opinions. This is quite an expensive instrument, and the amount of details can be overwhelming. Without you guys, terrible decisions could've been made. From the bottom of our hearts, we thank you all <3
So, I believe this to be the end of this "saga". We contacted Beltuna, sent them the videos, photos and all the info we got. First and foremost: a big shoutout to them. They were 100% polite and willing to help and talk to us, even though they weren't oblidged. I won't tell the names of the people who spoke of us for obvious reasons. However, in case they ever read this thread for whatever reason, I want them to know that, whenever I travel to Castelfidardo: I'll find Beltuna, I'll find you, and I'll... purchase a brand new Leader IV from you. You guys are increadible <3
Based on everything we showed them, they were sure that all the modifications weren't done by them (as we all knew, given the garbage quality). However, they believe that, appart from the reeds themselves, everything else looks original and quite well conserved. After talking to the seller in a video call, the poor guy hypothised that this accordion was modified this was just to make it more marketable in Brazil. As sad as this is, this kind of thing is unfortunately common. I do believe he knew nothing about this, for he is very reputable and looked visibly disapointed during the conversation.
Speaking with the people from Beltuna, I asked the following question mostly out of curiosity. Since everything's original apart from the piccolo reeds, would it be possible to do things right? Buy a new set of piccolo and clarinet reeds, and have a good professional turn this into a "true" LMMH (i.e., basson and clarinet on the chamber, picollo and flute out)? If it'd be possible, would they deem worth it? I imagined (as would many people, I reckon) that they'd say no. First and foremost, it's on their best interest to sell new accordions, since second hand ones don't exactly make them profit. Secondly, I imagine they wouldn't like to make such recommendation if the accordion would turn out terrible in the end (I doubt such a reputable brand would do something like this). And, still, they answered "yes, it's possible". Since the reed blocks themselves are original and (as far as they could see) undamaged, if a good professional makes the correct modifications, the instrument can become a good LMMH (not perfect, naturally, but good). I informed this information for them both (mostly for the seller's knowledge), as well as pointed to the obvious fact, despite being possible, it isn't worth it money-wise, so it's best to not even consider such route.
As far as I'm concerned, this whole story is over. Even if the instrument is still salvageable, the sunk cost fallacy is too strong with this whole situation. To put more money and time into something so convoluted sould be very silly. And yet, unsurprisingly (to me at least, although I'm sure some of you guys will probably be bewildered), he told me "I'll talk a bit more with him". I'm honnestly tired of this whole affair, and there's just so much you do to help someone. I was very blatant and told him the follosing. "I don't recommend you buy this accordion. You want to talk more with him? Suit yourself. Unless the seller, on his own risk, gets the new sets of piccolo and clarinet reeds, have the modifications done, show you a GREAT result (not decent, not good, nothing but GREAT) AND offers it to you at the exact same price as now, forget about it. No discussion, refuse any other arrangement. Now, it's on you."
Obviously the seller won't accept this. Hopefully he'll move on now. Again, thank you guys for helping us until this point. Just goes to show how amazing this forum and its community are. Hopefully, I'll make a final post on this thread eventually when he gets his new accordion. Until then, stay safe everyone