Thanks for the info. It sounds like the power cable wouldn’t make as “flush” of a connection with the receptacle with the small gap you describe. Is that so? It’s been awhile since I installed my non-NCF outlets/GTX/outlet cover - is the Teflon sheet an accessory that came with the GTX? That’s what I’m inferring from your reply and perhaps better fits the context of the Furutech description of the 105-D.
The teflon sheet comes with the wall plate.
The 105 D NCF cover is perfectly flush with the GTX receptacle with no "tension" on the cover, adding 1/2 turn bows it in slightly.
I totally get the confusion on this, it's unconventional and seems like the parts don't fit quite right, but Furutech has said this cover design is better and it's done intentionally.