Yes, rotating the tweeter so that the terminals on the new design are in a north south orientation looks like a really good idea. No cutting of the tweeter arm is a very good outcome!
Actually, on a second look, metal will still be needed to be removed from the ring section of the tweeter plate so that the terminals can fit.
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We didnāt need AIā¦
We did the research when we replaced the tweeters in our Spendor SP2s.
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In our experience, the new tweeter is also a slight sonic improvement on the old.
Electrically and electro-acousically itās a very close match as well.
We replaced the tweeters in a pair of Spendor SP2s and were very pleased with the result.
If thatās so, then brilliant, but when I recently replaced the tweeters on my own SL2s, I studied the new tweeter and concluded that removing some metal from the mounting ring was going to be needed as well as slightly longer cables (RS56 by the way) to the sockets at the back of the arm. In the end I sourced some original tweeters so the drilling and longer cables werenāt needed.
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I hope that you can fix these speakers @HiFiman
They are truly wonderful when they are on top form
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Brilliant, thanks Richard 
Damn, I knew gender ideology was leaking in everywhere, didnāt realise I had to worry about my HiFi!
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Hmmā¦bloody spell check! Letās try rogue!
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Why so few Mana supports?! I wonder if heās leaving performance on the table 
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Iāve been re-reading some of my old Hi-Fi Answers mags from the late 80ās that my old folks had kept in their loft. This was when Jimmy Hughes was on a real mission with the Belt stuff, which makes for interesting reading.
Bizarre indeed !
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Ah yes, I didnāt notice that, thanks for pointing this out.
Back to the drawing board.
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I used to get Hi-Fi Answers every month back then. I had piles of them in my bedroom at my parents house where I then lived. JMH ws a regular reviewer/contibutor and his pieces were nothing if not extremely entertaining. He once advocated sealing around all doors and windows in the listening room with tape to create an airtight seal. When I ran the idea past my dad he strongly advised against it on the grounds that I would eventually suffocate!
The whole Peter Belt thing was really more akin to modern day sorcery or witchcraft than anything else. At one time I suspect it would have resulted in being burnt at the stake.
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Oh dear - Iāve been reading one advocating placing a bottle of ātreatedā water next to your consumer unitā¦
Anyway, donāt want to go too far off topic from @HiFiman ās unfortunate incident so Iāll probably start another thread once Iāve digested a few more Belt articles.
In the meantime, Iām going to put a piece of paper under one foot of my Klimax DSM and put an old photo in the freezer for good measure 
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Thereās already a thread which would be suitable for Peter Beltās ideas. Itās called the Best Jokes thread!
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Thatās an insult to a proper joke! 
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It appealed to my silly sense of humour.
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That brings back memories! Donāt forget that any bank statements in the house will have a negative aura which will degrade the sound. However obliterating all outgoings with black marker will render them harmless.
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What a load of rubbish - it was because the gear sounded better than other gear.
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Indeed.
Funny how PBās rantings still keep surfacing. Hifi Answers promoting them, togetger with Jimmy Hughesās own nonsensical ramblings were directly instrumental in my abandonment of taking the hifi press seriously.
But for amusement, hereās something I wrote in another thread a few minutes ago: the same challenge actually applies to every one of his ideas as it does to other tweaks (including cables and power supplies and supports etc): unless you actually try them, and under conditions of avoiding bias (whether positive or negative bias), how do you know whether or not they actually work?