OK
@bencran . I have a Tacx flow, that is also designed with QR frames in mind.
I played around with all sorts of bits and pieces, and came up with these..
View attachment 569593
They come in a pack of three different thread pitches, but I only needed the 1.5. I "think" there is a 1.75 lying unused in the garage.
Fits perfectly on my Tacx and holds the bike nice and firm.
If you want I'll have a look tomorrow. Or you can try and find these - I can't be sure but think mine came from Sigma.
The problem seems to be that whole wheel trainers still think in terms of QR.
If you want to "try before you buy" give me a holler. Thread pitch is the most important bit for you to check.