it is spring loaded but it wont go down enough to the point where the silver bit sits on it without pressure or squeakingAre you talking about this bit?
View attachment 10306
It should be spring loaded, check it's not jammed or bent.
That pic just looks generic to me. They should come with the horn connection bit. There isn't one on that picLooks different to all the Starlet steering adapters that I've ever used.
https://www.driftworks.com/hkb-steering-wheel-boss-kit-ot-202-for-toyota-starlet-p91-w-airbag.html
Agree, that's what I have on mine and it fits fine. There is a bit of a gap between the boss and the steering column cowling, but that is just normal for a boss kitThe picture may well be generic. Its the HKB boss that I have, no fitment issues.