I can only imagine tuning that Webers... Lambo carbureted engine (until 1988 Countach they were all carburetor engines of I remember correctly) was notoriously tricky to tune and regulate.
Yes they were an art, which I perfected, had been used to tuning Webers on my Rally Cars back in the day, but they were mostly 4 cylinder with 2 sidedrafts, the Lambo engines had 6 carbs with 2 chokes each.
I had a length of 3" x 1" timber with 12 vacuum gauges and used to balance them that way, but yeah, I doubt there are many techies left these days that can set them up spot on nowadays
My biggest claim to fame was out with a mate who (still) builds Race boats in England and sells them. He needed to test one one day, so as I was at that time the "Commodore" of a Water Ski Club on the River Medway and it was a quiet week day I took the boat down to our slipway and me (piloting) and my buddy data logging / adjusting, trickled out past some moorings and did a few passes as he tuned stuff.
After a few passes I gave it the gun. This thing had three 300hp Evinrudes on the back IIRC it was a 26 ft Phantom hull, narrow race boat style.
So we are getting up to around 90mph and I know it's got bucket loads more to give so I'm trimming it up, trimming it up, trimming it up and it's pulling hard, speedo racing towards about 120 mph, nose caught a wave, up she went, the wind under the front and completely flipped.
Dazed and slightly WTF happened faces on, there is us 2 bobbing in the water with seat cushions and trim and other bits all floating around us !!
Then I see one of the local marina owners was heading towards us to pick us up and grabbing bits of the debris on the way. We got on board and he towed the boat which was now floating the right way up and half full of water back to the club slipway where we got it back on the trailer and drained.
Back to his workshops and out with all spark plugs on all 3 engines, air boxes off, spun the motors, which hadn't ingested much water thankfully, they wouldn't have been running when it landed back in the water as I was wearing the kill cord !!
By that evening she was all up and running again. He had told the new owner that there was a problem with one of the engines on testing and the part would take a couple of days to get, I doubt the guy ever knew that his brand new boat had turned a cartwheel before he got it
Now, just for the non nautical guys who might be reading this in horror, this is a fairly common occurrence when racing powerboats, so it wasn't like we were dicing with death or owt, we had all the right kit on, and I'm sure that boat was probably flipped / sunk a few more times in its lifetime.