Hi Neil.
It untwists. You can see the lug one of 3 on the assembled switch Pic.
Mine was very tight and took time twisting forward and back the Bakelite bottom and brass top.
Also the 2 Alloy Barrel lug break easy. Second part down in third image. Apply heat from heat gun before straightening or bending no more than needed.
I have face stickers from UK if he needs one.
whitehillbilly
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