Surely the take-in of the emf causes a current in the shielding, you need to take that away. The energy doesn’t die if you leave it there, although it equally doesn’t die if you ship it to ground, but al least it’s not bothering you any more
I bought a “blues tribute” p from eBay and it was fabulously loud and punchy
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F291145247792
Slug tape doesn’t have conductive adhesive so you need to fold an edge over to touch the next piece or solder the pieces together. That’s the price difference between slug tape and copper shielding foil tape
And I’m a spy and international playboy
my hobby is torturing environmentalists by making endless flypasts of their homes in a particularly noisy private jet and dumping spare fuel/“blue ice” on them, although i tend to save the latter for annoying teenage ones. If it lands on a draft speech About how “the planet is burning” I shout “bullseye!” On Twitter @them. If I also dumped spare fuel they might find out that they were right all along, their bit of the planet suddenly is burning