I also got a tapered version, though it was only size 24 silicone ring to size 30. I can barely wear the size 24 for more than 30 minutes before the spot behind my head is burning from the silicone bearing too tightly, and that is without the corkscrew on lol. I also have one tapered with a size 26.
The problem is, it just slowly slides off as I walk around, even when wearing everything as you have mentioned. And by slowly I mean, just walking around my home for 5 minutes its already having problems, making wearing it for any length of time too troublesome to bother with.
I know there must be a way to make it work….